0 00:00:00,000 --> 00:00:30,000 Dear viewer, these subtitles were generated by a machine via the service Trint and therefore are (very) buggy. If you are capable, please help us to create good quality subtitles: https://c3subtitles.de/talk/334 Thanks! 1 00:00:14,530 --> 00:00:17,109 Thank you. This is actually 2 00:00:17,110 --> 00:00:18,069 quite an honor. 3 00:00:18,070 --> 00:00:20,439 I'm Julia Lankin of the Fast 4 00:00:20,440 --> 00:00:22,329 Car Project. 5 00:00:22,330 --> 00:00:24,429 I have been basically 6 00:00:24,430 --> 00:00:26,739 3D casting aluminum here 7 00:00:26,740 --> 00:00:28,899 for the last six months or so. 8 00:00:29,950 --> 00:00:32,559 And it's been an interesting 9 00:00:32,560 --> 00:00:33,699 process. 10 00:00:33,700 --> 00:00:35,829 I actually 11 00:00:35,830 --> 00:00:38,349 have a background as a software engineer, 12 00:00:38,350 --> 00:00:40,299 not anything, not really anything 13 00:00:40,300 --> 00:00:41,409 resembling hardware. 14 00:00:41,410 --> 00:00:43,719 Normally I've been 15 00:00:43,720 --> 00:00:46,029 developing all kinds of things around 16 00:00:46,030 --> 00:00:48,789 the Linux kernel and some 17 00:00:48,790 --> 00:00:51,279 work, but I 18 00:00:51,280 --> 00:00:53,379 recently got a bad case 19 00:00:53,380 --> 00:00:56,199 of carpal tunnel, so I kind of had to 20 00:00:56,200 --> 00:00:57,819 ditch the software career for something a 21 00:00:57,820 --> 00:00:59,829 little more, a little less repetitive 22 00:00:59,830 --> 00:01:00,830 stress. 23 00:01:01,750 --> 00:01:03,909 I've been building 3-D printers over 24 00:01:03,910 --> 00:01:05,889 the last three years, so I decided that 25 00:01:05,890 --> 00:01:08,469 it would be a good idea to 26 00:01:08,470 --> 00:01:10,269 kind of push that technology a bit 27 00:01:10,270 --> 00:01:11,270 forward. 28 00:01:13,840 --> 00:01:15,939 I've been I've been looking at 29 00:01:15,940 --> 00:01:18,579 the situation we have with proprietary 30 00:01:18,580 --> 00:01:20,619 hardware in the automotive industry for a 31 00:01:20,620 --> 00:01:22,959 while and 32 00:01:22,960 --> 00:01:25,179 decided basically that it 33 00:01:25,180 --> 00:01:27,279 was it was time for us to have something 34 00:01:27,280 --> 00:01:29,529 a little more solid as far as 35 00:01:29,530 --> 00:01:31,629 an option for 36 00:01:31,630 --> 00:01:33,219 repairing our own vehicles. 37 00:01:33,220 --> 00:01:35,469 Where I come from, having a 38 00:01:35,470 --> 00:01:37,389 not having a vehicle means not having a 39 00:01:37,390 --> 00:01:39,279 job, not being able to get to medical 40 00:01:39,280 --> 00:01:41,199 event, you know, basically not being able 41 00:01:41,200 --> 00:01:42,200 to have a lifestyle. 42 00:01:46,730 --> 00:01:48,799 When I started on the 43 00:01:48,800 --> 00:01:51,079 aluminum printing sort of quest 44 00:01:51,080 --> 00:01:53,179 here, it was, of course, to to 45 00:01:53,180 --> 00:01:55,699 print up some durable components 46 00:01:55,700 --> 00:01:57,919 for the vehicles that I'm trying 47 00:01:57,920 --> 00:01:59,359 to produce. 48 00:01:59,360 --> 00:02:01,429 I've been basically working on the 49 00:02:01,430 --> 00:02:03,559 entire chain from the design 50 00:02:03,560 --> 00:02:05,659 tool of implicit can all the 51 00:02:05,660 --> 00:02:07,939 way down to actually cast 52 00:02:07,940 --> 00:02:09,589 in the aluminum itself. 53 00:02:09,590 --> 00:02:12,199 The four 54 00:02:12,200 --> 00:02:14,239 for the automobiles computing system 55 00:02:14,240 --> 00:02:15,919 itself. We've been looking at using as 56 00:02:15,920 --> 00:02:18,019 many free and open tools as well 57 00:02:18,020 --> 00:02:20,209 to make sure that we can actually trust 58 00:02:20,210 --> 00:02:22,099 the machinery that we're driving around 59 00:02:25,280 --> 00:02:26,209 now. 60 00:02:26,210 --> 00:02:28,489 Currently the the state of the art 61 00:02:28,490 --> 00:02:30,769 for if you want to take a piece 62 00:02:30,770 --> 00:02:32,839 of plastic and convert it into a piece of 63 00:02:32,840 --> 00:02:34,969 aluminum is called it's the 64 00:02:34,970 --> 00:02:37,069 lost play technique, which is 65 00:02:37,070 --> 00:02:39,139 to say that you lose play 66 00:02:39,140 --> 00:02:41,299 plastic whenever you're producing 67 00:02:41,300 --> 00:02:43,489 the part, you put the part inside of a 68 00:02:43,490 --> 00:02:45,679 mold that is made out of sand and made 69 00:02:45,680 --> 00:02:47,329 out of plaster of Paris. 70 00:02:47,330 --> 00:02:49,519 Then you let the mold set up 71 00:02:49,520 --> 00:02:51,709 after attaching kind of an inlet, 72 00:02:51,710 --> 00:02:54,739 an outlet for the aluminum in the mold. 73 00:02:54,740 --> 00:02:57,019 And then you put it into a propane 74 00:02:57,020 --> 00:02:59,389 fired for you wait for 75 00:02:59,390 --> 00:03:01,789 roughly about five hours for the plastic 76 00:03:01,790 --> 00:03:03,949 to actually burn and for all of your 77 00:03:03,950 --> 00:03:06,139 inlets and outlets to burn out. 78 00:03:06,140 --> 00:03:08,059 And then you wait for it to cool. 79 00:03:08,060 --> 00:03:10,309 You take this and 80 00:03:10,310 --> 00:03:12,439 put it into basically a box full of sand 81 00:03:12,440 --> 00:03:15,019 with a little bit of extensions on it to 82 00:03:15,020 --> 00:03:16,939 let the aluminum flow into it. 83 00:03:16,940 --> 00:03:19,189 And then you pour in liquid aluminum. 84 00:03:19,190 --> 00:03:21,199 It's a time consuming process that 85 00:03:21,200 --> 00:03:23,269 requires people who have a lot 86 00:03:23,270 --> 00:03:25,429 of experience dealing with basically 87 00:03:25,430 --> 00:03:28,519 blacksmith type tools for 88 00:03:28,520 --> 00:03:30,679 it's roughly twenty four hours to get a 89 00:03:30,680 --> 00:03:31,789 part out of it. 90 00:03:34,630 --> 00:03:36,849 So what I've been what I've been looking 91 00:03:36,850 --> 00:03:39,039 at is, of course, with a 24 92 00:03:39,040 --> 00:03:41,049 hour delay, it's hard to have any sort of 93 00:03:41,050 --> 00:03:43,179 turn around and the 94 00:03:43,180 --> 00:03:45,789 results are not necessarily guaranteed. 95 00:03:45,790 --> 00:03:48,309 I mean, I've been having roughly 96 00:03:48,310 --> 00:03:50,439 a basically one in 97 00:03:50,440 --> 00:03:52,569 three success rate out of my process 98 00:03:52,570 --> 00:03:53,769 here. 99 00:03:53,770 --> 00:03:55,879 And that has to do more with the 100 00:03:55,880 --> 00:03:57,969 pieces that are in common with with lost 101 00:03:57,970 --> 00:04:00,099 plays than anything that anything 102 00:04:00,100 --> 00:04:01,599 I've been managing. 103 00:04:01,600 --> 00:04:04,239 You have to sit there and burn propane 104 00:04:04,240 --> 00:04:06,399 for most of the day, which is a whole 105 00:04:06,400 --> 00:04:07,479 lot of energy. 106 00:04:07,480 --> 00:04:10,479 And we have 107 00:04:10,480 --> 00:04:12,489 in practicing this sort of a technique, 108 00:04:12,490 --> 00:04:14,109 we've actually run into several 109 00:04:14,110 --> 00:04:15,699 accidental fires. 110 00:04:15,700 --> 00:04:17,768 So sort of 111 00:04:17,769 --> 00:04:19,990 not to burn oneself down is important. 112 00:04:24,170 --> 00:04:26,089 When I was looking around at ways to 113 00:04:26,090 --> 00:04:28,459 actually impart energy into the vessel, 114 00:04:28,460 --> 00:04:29,899 I was thinking, you know. 115 00:04:31,240 --> 00:04:33,399 Microwaves are very good at getting 116 00:04:33,400 --> 00:04:35,709 into a surface and getting 117 00:04:35,710 --> 00:04:36,849 to a target. 118 00:04:36,850 --> 00:04:38,979 So I started this process, 119 00:04:38,980 --> 00:04:41,229 you know, looking at 3D printers and 120 00:04:41,230 --> 00:04:42,939 thinking, well, why don't I just make an 121 00:04:42,940 --> 00:04:45,189 aluminum extruder to actually 122 00:04:45,190 --> 00:04:46,779 extrude aluminum? 123 00:04:46,780 --> 00:04:48,969 Well, after about a year 124 00:04:48,970 --> 00:04:50,859 and a half of working on it, it turned 125 00:04:50,860 --> 00:04:53,109 out that the the method 126 00:04:53,110 --> 00:04:55,089 I was going down required me to use 127 00:04:55,090 --> 00:04:57,039 diamond like carbon deposition 128 00:04:57,040 --> 00:04:59,109 technologies, which I don't even have. 129 00:04:59,110 --> 00:05:01,329 So I 130 00:05:01,330 --> 00:05:03,189 ended up scratching that after quite a 131 00:05:03,190 --> 00:05:04,629 while of work. 132 00:05:04,630 --> 00:05:06,969 So I looked at the lost play techniques 133 00:05:06,970 --> 00:05:09,339 and decided that these are 134 00:05:09,340 --> 00:05:10,569 reasonable techniques. 135 00:05:10,570 --> 00:05:12,729 But all of this propane is probably 136 00:05:12,730 --> 00:05:14,649 a bad idea to be doing in any sort of a 137 00:05:14,650 --> 00:05:16,509 residential zone. 138 00:05:16,510 --> 00:05:19,059 So at that point 139 00:05:19,060 --> 00:05:21,099 I started I started looking around on 140 00:05:21,100 --> 00:05:23,169 YouTube and all your various video 141 00:05:23,170 --> 00:05:26,439 sites and saw at least 142 00:05:26,440 --> 00:05:28,749 roughly 15 people who claimed 143 00:05:28,750 --> 00:05:30,759 to have microwaved aluminum to the point 144 00:05:30,760 --> 00:05:33,009 at which it was melt. It was actually 145 00:05:33,010 --> 00:05:33,939 liquid. 146 00:05:33,940 --> 00:05:36,489 Now, some of those I found 147 00:05:36,490 --> 00:05:38,829 use like woods metal or used 148 00:05:38,830 --> 00:05:40,839 other lower temperature metals and then 149 00:05:40,840 --> 00:05:42,849 said, hey, you can do metal in the 150 00:05:42,850 --> 00:05:43,929 microwave. 151 00:05:43,930 --> 00:05:45,609 But, you know, aluminum is hard. 152 00:05:47,520 --> 00:05:49,719 Now, I went ahead and 153 00:05:49,720 --> 00:05:52,269 built a forge 154 00:05:52,270 --> 00:05:54,879 kind of inspired off of the designs 155 00:05:54,880 --> 00:05:57,039 that they were using to melt 156 00:05:57,040 --> 00:05:58,179 down my aluminum. 157 00:05:58,180 --> 00:06:00,609 But then I figured, well, 158 00:06:00,610 --> 00:06:02,439 I can melt aluminum in the microwave, but 159 00:06:02,440 --> 00:06:05,049 what do I do about this mold technique? 160 00:06:05,050 --> 00:06:07,449 Because I still have to have an empty 161 00:06:07,450 --> 00:06:10,449 mold to pour the aluminum into 162 00:06:10,450 --> 00:06:13,359 in order for in order to produce parts. 163 00:06:13,360 --> 00:06:15,429 So we went 164 00:06:15,430 --> 00:06:17,979 ahead and created 165 00:06:17,980 --> 00:06:20,589 a mold process, 166 00:06:20,590 --> 00:06:22,569 but we were still having some real 167 00:06:22,570 --> 00:06:24,429 trouble with the microwave forge. 168 00:06:24,430 --> 00:06:26,049 I've only gotten it to work a limited 169 00:06:26,050 --> 00:06:28,179 number of times and have blown 170 00:06:28,180 --> 00:06:30,919 smoking holes in at least one microwave. 171 00:06:32,920 --> 00:06:34,119 And so. 172 00:06:35,680 --> 00:06:38,679 We went ahead and set up this small 173 00:06:38,680 --> 00:06:41,259 the small propane fired for 174 00:06:41,260 --> 00:06:43,209 that I found directions for on 175 00:06:43,210 --> 00:06:45,609 Instructables, which is basically 176 00:06:45,610 --> 00:06:47,799 the size of a large coffee can a lot 177 00:06:47,800 --> 00:06:50,049 more a lot easier to have 178 00:06:50,050 --> 00:06:51,640 lying around and a lot more 179 00:06:53,110 --> 00:06:55,849 a lot more space sensitive. 180 00:06:55,850 --> 00:06:57,999 So we started working with that one 181 00:06:58,000 --> 00:06:59,889 so that we could get liquid aluminum for 182 00:06:59,890 --> 00:07:02,139 our for our molding process and start 183 00:07:02,140 --> 00:07:03,930 actually developing our molding process. 184 00:07:05,730 --> 00:07:07,829 This is what the microwave forbes' 185 00:07:07,830 --> 00:07:09,989 that I created the first time looks like 186 00:07:09,990 --> 00:07:12,659 this one here actually worked. 187 00:07:12,660 --> 00:07:14,849 So it's basically a 188 00:07:14,850 --> 00:07:17,519 mixture of fire, cement 189 00:07:17,520 --> 00:07:19,979 and perlite. 190 00:07:19,980 --> 00:07:22,319 So silicon, 191 00:07:22,320 --> 00:07:24,449 oh, not silicon carbide, but another 192 00:07:24,450 --> 00:07:27,089 silicon substance and 193 00:07:27,090 --> 00:07:29,069 basically a gardening supply perlite. 194 00:07:33,050 --> 00:07:35,179 In order to produce it, it's 195 00:07:35,180 --> 00:07:37,009 a large, complicated process. 196 00:07:37,010 --> 00:07:39,169 So my my apologies if I skip through 197 00:07:39,170 --> 00:07:40,699 some of this, this is still something 198 00:07:40,700 --> 00:07:42,949 that is a little bit on the 199 00:07:42,950 --> 00:07:45,109 better level, because we've 200 00:07:45,110 --> 00:07:46,339 only we've only managed to get this to 201 00:07:46,340 --> 00:07:47,929 work a couple of times. 202 00:07:47,930 --> 00:07:49,999 And I've produced almost as 203 00:07:50,000 --> 00:07:52,249 many forges trying to make this make 204 00:07:52,250 --> 00:07:54,619 designs work as I have 205 00:07:54,620 --> 00:07:56,059 gotten cups full of aluminum. 206 00:07:58,250 --> 00:08:00,409 So basically, the entire 207 00:08:00,410 --> 00:08:02,899 concept is you make yourself a 208 00:08:02,900 --> 00:08:05,179 vessel for holding a lot of heat 209 00:08:05,180 --> 00:08:06,769 and then you put on the inside of this 210 00:08:06,770 --> 00:08:09,019 vessel some silicon carbide 211 00:08:09,020 --> 00:08:10,579 grinding powder. And you see over there 212 00:08:10,580 --> 00:08:12,919 in the consumables, that's a 213 00:08:12,920 --> 00:08:15,709 that is a microwave scepter, 214 00:08:15,710 --> 00:08:17,839 which is to say that it's a material that 215 00:08:17,840 --> 00:08:20,089 when it receives microwaves, it 216 00:08:20,090 --> 00:08:23,029 actually heats up rapidly 217 00:08:23,030 --> 00:08:25,309 and will just conduct 218 00:08:25,310 --> 00:08:27,079 this heat outward without going into a 219 00:08:27,080 --> 00:08:29,089 liquid or gaseous stage. 220 00:08:29,090 --> 00:08:31,159 So it just gets warm and you 221 00:08:31,160 --> 00:08:33,259 can just dump lots and lots of microwaves 222 00:08:33,260 --> 00:08:34,260 at. 223 00:08:37,270 --> 00:08:39,668 So, like I said, we're using fire, 224 00:08:39,669 --> 00:08:41,949 cement and perlite for 225 00:08:41,950 --> 00:08:44,289 the vessel itself, 226 00:08:44,290 --> 00:08:46,239 which we end up having to make in 227 00:08:46,240 --> 00:08:48,729 multiple, multiple kind of ways, 228 00:08:48,730 --> 00:08:51,249 we make the inside of the chamber first, 229 00:08:51,250 --> 00:08:53,409 then we make the outside of the chamber, 230 00:08:53,410 --> 00:08:55,419 then a seal on the top of it and then a 231 00:08:55,420 --> 00:08:57,789 lid to go down onto the seal. 232 00:08:57,790 --> 00:09:00,399 We have to use an oven to actually 233 00:09:00,400 --> 00:09:02,559 cook all of this fire cement until such 234 00:09:02,560 --> 00:09:05,169 a point as it's actually solid 235 00:09:05,170 --> 00:09:07,269 because it comes just as a sort of 236 00:09:07,270 --> 00:09:08,270 a putty. 237 00:09:08,980 --> 00:09:11,259 And we we mix that with the perlite 238 00:09:11,260 --> 00:09:13,029 and kind of construct our vessel from 239 00:09:13,030 --> 00:09:14,030 there. 240 00:09:16,510 --> 00:09:18,639 The inside layer we 241 00:09:18,640 --> 00:09:21,279 end up putting together by using a car, 242 00:09:21,280 --> 00:09:23,589 sort of making our own cardboard box and 243 00:09:23,590 --> 00:09:25,599 then sort of smearing the stuff around 244 00:09:25,600 --> 00:09:27,699 the cardboard box, the box 245 00:09:27,700 --> 00:09:29,979 has to be roughly the size of 246 00:09:29,980 --> 00:09:32,139 the vessel, which in this case is a steel 247 00:09:32,140 --> 00:09:34,389 cup that we're going to melt the aluminum 248 00:09:34,390 --> 00:09:35,049 in. 249 00:09:35,050 --> 00:09:37,089 So we don't allow the aluminum to touch 250 00:09:37,090 --> 00:09:39,309 the actual silicon carbide or box 251 00:09:39,310 --> 00:09:41,409 itself that we have something to pick it 252 00:09:41,410 --> 00:09:42,410 up out of the box with. 253 00:09:45,620 --> 00:09:47,569 The outside layers would basically just 254 00:09:47,570 --> 00:09:49,999 make the thing as thick as possible 255 00:09:50,000 --> 00:09:52,099 that will still fit in a microwave. 256 00:09:52,100 --> 00:09:53,239 We do have to make sure that the 257 00:09:53,240 --> 00:09:55,639 microwave itself has the, 258 00:09:55,640 --> 00:09:57,709 you know, the little turning table in the 259 00:09:57,710 --> 00:09:58,969 bottom of the microwave. 260 00:09:58,970 --> 00:10:01,219 We take that out so that the kiln is not 261 00:10:01,220 --> 00:10:02,749 sitting there spinning and we can 262 00:10:02,750 --> 00:10:04,819 actually make it rectangular instead of 263 00:10:04,820 --> 00:10:05,820 round. 264 00:10:08,660 --> 00:10:10,759 The seal and 265 00:10:10,760 --> 00:10:12,229 the lid were actually a pretty 266 00:10:12,230 --> 00:10:13,939 complicated process because you want to 267 00:10:13,940 --> 00:10:16,219 get a very tight seal on the top 268 00:10:16,220 --> 00:10:17,269 of this thing. 269 00:10:17,270 --> 00:10:19,669 So we made as flat 270 00:10:19,670 --> 00:10:21,859 of a seal as possible by hand. 271 00:10:21,860 --> 00:10:24,049 And then once we had 272 00:10:24,050 --> 00:10:26,899 that done, we kind of just 273 00:10:26,900 --> 00:10:28,999 took and made as close as we 274 00:10:29,000 --> 00:10:31,339 could to a flat lid, let it 275 00:10:31,340 --> 00:10:33,469 heat up for a little while in the oven, 276 00:10:33,470 --> 00:10:35,539 and then put the entire chamber 277 00:10:35,540 --> 00:10:37,819 on top of it as sort of both a weight 278 00:10:37,820 --> 00:10:39,979 and a guide to make it form 279 00:10:39,980 --> 00:10:41,500 into exactly the same shape. 280 00:10:44,700 --> 00:10:46,979 Once we have the chamber itself made 281 00:10:46,980 --> 00:10:49,229 and we have lived, we basically 282 00:10:49,230 --> 00:10:51,809 just take the microwave scepter 283 00:10:51,810 --> 00:10:53,999 and we mix it with sugar 284 00:10:54,000 --> 00:10:56,609 and water and just basically 285 00:10:56,610 --> 00:10:59,069 paint it on the inside of the 286 00:10:59,070 --> 00:11:00,299 of the vessel. 287 00:11:00,300 --> 00:11:02,939 So the sugar 288 00:11:02,940 --> 00:11:05,039 serves the function of holding all 289 00:11:05,040 --> 00:11:07,109 of the silicon carbide 290 00:11:07,110 --> 00:11:09,539 in place, because when you burn sugar, 291 00:11:09,540 --> 00:11:11,729 you get pure carbon, which sets 292 00:11:11,730 --> 00:11:13,859 up very nicely with the silicon carbide. 293 00:11:13,860 --> 00:11:16,409 So it kind of just makes all the 294 00:11:16,410 --> 00:11:18,479 all the silicon carbide stay on the 295 00:11:18,480 --> 00:11:20,549 wall exactly where you paint it. 296 00:11:20,550 --> 00:11:22,769 I used the oven to 297 00:11:22,770 --> 00:11:25,139 apply the first layer and 298 00:11:25,140 --> 00:11:26,669 after you've got the first layer of your 299 00:11:26,670 --> 00:11:28,829 silicon carbide applied, 300 00:11:28,830 --> 00:11:30,479 then you can actually just use the 301 00:11:30,480 --> 00:11:32,429 microwave for applying the rest of the 302 00:11:32,430 --> 00:11:33,899 layers because of course, the silicon 303 00:11:33,900 --> 00:11:35,669 carbide is just going to get hot. 304 00:11:35,670 --> 00:11:38,189 So that was very convenient 305 00:11:38,190 --> 00:11:40,379 because your first baking something 306 00:11:40,380 --> 00:11:42,149 in the oven for an hour and then you put 307 00:11:42,150 --> 00:11:43,829 it in the microwave and it takes five 308 00:11:43,830 --> 00:11:44,830 minutes. 309 00:11:47,700 --> 00:11:50,309 This here is one of our proof of concept, 310 00:11:50,310 --> 00:11:51,749 Maltz, this is the first time I 311 00:11:51,750 --> 00:11:54,029 successfully got aluminum to 312 00:11:54,030 --> 00:11:56,069 melt in my microwave. 313 00:11:56,070 --> 00:11:58,319 It took me basically two 314 00:11:58,320 --> 00:12:00,629 hours and 40 minutes, set 315 00:12:00,630 --> 00:12:01,630 it high. 316 00:12:04,630 --> 00:12:06,759 And when I went 317 00:12:06,760 --> 00:12:08,739 to take it out of the microwave, I had 318 00:12:08,740 --> 00:12:11,499 to, of course, use fire gloves and 319 00:12:11,500 --> 00:12:13,599 keep this microwave outside, insert 320 00:12:13,600 --> 00:12:15,759 the standard, never use a microwave 321 00:12:15,760 --> 00:12:17,169 that you're going to use for any other 322 00:12:17,170 --> 00:12:19,149 purpose and don't do this kind of stuff 323 00:12:19,150 --> 00:12:21,009 indoors. Liquid aluminum is not good for 324 00:12:21,010 --> 00:12:22,010 your floors. 325 00:12:25,090 --> 00:12:27,609 So once the aluminum actually 326 00:12:27,610 --> 00:12:30,039 liquefied, I didn't have myself 327 00:12:30,040 --> 00:12:32,109 a mold prepared at the time. 328 00:12:32,110 --> 00:12:34,419 I honestly didn't expect it to work after 329 00:12:34,420 --> 00:12:36,339 the third kiln that I had built. 330 00:12:36,340 --> 00:12:38,199 And it's like, OK, I have a couple of 331 00:12:38,200 --> 00:12:40,269 liquid aluminum. What do I do with it? 332 00:12:40,270 --> 00:12:41,169 Nothing. 333 00:12:41,170 --> 00:12:42,309 OK, so. 334 00:12:43,510 --> 00:12:45,669 So I just let it cool 335 00:12:45,670 --> 00:12:47,619 in the cup. Now aluminum, when it's 336 00:12:47,620 --> 00:12:49,839 cooling, actually contracts by 337 00:12:49,840 --> 00:12:51,849 about three percent. 338 00:12:51,850 --> 00:12:54,219 So as a result it just kind of pulled 339 00:12:54,220 --> 00:12:56,469 right out of the cup because it didn't 340 00:12:56,470 --> 00:12:57,429 bind to the edges. 341 00:12:57,430 --> 00:12:58,629 The cup is made of steel. 342 00:12:58,630 --> 00:13:00,369 The aluminum is obviously made of 343 00:13:00,370 --> 00:13:02,229 aluminum and aluminum oxide. 344 00:13:02,230 --> 00:13:04,299 So it did 345 00:13:04,300 --> 00:13:05,379 not bind at all. 346 00:13:05,380 --> 00:13:06,789 I just pulled it kind of right out of the 347 00:13:06,790 --> 00:13:09,279 cup. That is actually a 348 00:13:09,280 --> 00:13:11,469 steel cup that I picked up for one 349 00:13:11,470 --> 00:13:13,089 dollar at a thrift store. 350 00:13:13,090 --> 00:13:15,489 That's your high tech 351 00:13:15,490 --> 00:13:16,749 crucible here. 352 00:13:20,980 --> 00:13:23,319 Now, when we went to make our 353 00:13:23,320 --> 00:13:25,449 small propane forge, basically 354 00:13:25,450 --> 00:13:27,520 based on the Instructables link. 355 00:13:28,540 --> 00:13:31,179 We set up and 356 00:13:31,180 --> 00:13:32,979 we built a bigger one, honestly, because 357 00:13:32,980 --> 00:13:34,749 we wanted to we wanted this process to 358 00:13:34,750 --> 00:13:36,849 really kick out aluminum as fast 359 00:13:36,850 --> 00:13:38,859 as possible so we didn't increase the 360 00:13:38,860 --> 00:13:41,049 size of the crucible, 361 00:13:41,050 --> 00:13:42,309 the vessel that we actually hold the 362 00:13:42,310 --> 00:13:44,559 aluminum in. Instead, we we 363 00:13:44,560 --> 00:13:47,109 went outward on the size of 364 00:13:47,110 --> 00:13:48,969 the forge itself. 365 00:13:48,970 --> 00:13:51,069 So that is a standard 366 00:13:51,070 --> 00:13:52,149 milk crate you see there. 367 00:13:52,150 --> 00:13:54,219 And that is the size of the forages that 368 00:13:54,220 --> 00:13:56,379 we're making. So we basically just build 369 00:13:56,380 --> 00:13:58,449 one that's, you know, roughly 370 00:13:58,450 --> 00:13:59,889 13 inches on each side. 371 00:14:06,190 --> 00:14:07,749 Once we've got the forge up and running, 372 00:14:07,750 --> 00:14:09,249 this is what this is what it actually 373 00:14:09,250 --> 00:14:11,439 looks like after running for quite 374 00:14:11,440 --> 00:14:13,479 a long time and putting out a whole lot 375 00:14:13,480 --> 00:14:14,649 of aluminum. 376 00:14:14,650 --> 00:14:16,479 This one here has as you can see, there 377 00:14:16,480 --> 00:14:17,899 are cracks in the top of it. 378 00:14:17,900 --> 00:14:20,559 These do break down over time. 379 00:14:20,560 --> 00:14:22,629 But we we've gotten roughly 380 00:14:22,630 --> 00:14:24,699 40 or 50 melts out of each one of 381 00:14:24,700 --> 00:14:26,499 them that we're producing. 382 00:14:26,500 --> 00:14:28,989 So as you can see, we've got a 383 00:14:28,990 --> 00:14:30,759 chamber there full of aluminum. 384 00:14:31,960 --> 00:14:34,059 They there's a set of basically steel 385 00:14:34,060 --> 00:14:36,189 tongs that we put around the 386 00:14:36,190 --> 00:14:38,539 crucible that we hold the aluminum in. 387 00:14:38,540 --> 00:14:40,719 So it's always they're always part 388 00:14:40,720 --> 00:14:42,669 of one unit. So you can pick it up, of 389 00:14:42,670 --> 00:14:44,829 course, again with fire gloves, 390 00:14:44,830 --> 00:14:46,989 not your bare hands. 391 00:14:46,990 --> 00:14:49,059 So you can pick up the so you 392 00:14:49,060 --> 00:14:50,289 can pick up the crucible out of the 393 00:14:50,290 --> 00:14:52,509 chamber and 394 00:14:52,510 --> 00:14:54,039 pour your aluminum. 395 00:14:54,040 --> 00:14:56,439 We we use the chambers 396 00:14:56,440 --> 00:14:58,389 themselves are made out of are the 397 00:14:58,390 --> 00:15:00,609 crucibles themselves are made out 398 00:15:00,610 --> 00:15:01,689 of old propane. 399 00:15:01,690 --> 00:15:04,089 Can propane bottles, the small 400 00:15:04,090 --> 00:15:06,309 ones make sure that they're empty before 401 00:15:06,310 --> 00:15:07,330 you go cutting them in half? 402 00:15:09,830 --> 00:15:11,899 The the advantage of using 403 00:15:11,900 --> 00:15:13,399 that, other than the fact that it's a 404 00:15:13,400 --> 00:15:15,859 standard size, is it's also solid 405 00:15:15,860 --> 00:15:18,319 steel and that steel 406 00:15:18,320 --> 00:15:21,139 binds to the aluminum oxide 407 00:15:21,140 --> 00:15:23,059 whenever you're melting down aluminum, 408 00:15:23,060 --> 00:15:25,249 what we're what we're actually doing for 409 00:15:25,250 --> 00:15:27,349 our aluminum source is we're actually 410 00:15:27,350 --> 00:15:29,239 using old bicycle rims because we can get 411 00:15:29,240 --> 00:15:30,379 them for free. 412 00:15:30,380 --> 00:15:32,449 So free aluminum, hard to 413 00:15:32,450 --> 00:15:33,439 argue with. 414 00:15:33,440 --> 00:15:35,749 And it comes with some impurities 415 00:15:35,750 --> 00:15:37,129 on the outside of it because it's 416 00:15:37,130 --> 00:15:38,779 obviously been through its entire life 417 00:15:38,780 --> 00:15:40,759 cycle and then been warped and then then 418 00:15:40,760 --> 00:15:42,139 what have you. 419 00:15:42,140 --> 00:15:44,599 So the aluminum oxide 420 00:15:44,600 --> 00:15:46,909 that is that coats, all the aluminum 421 00:15:46,910 --> 00:15:49,159 that you see has to go somewhere. 422 00:15:49,160 --> 00:15:51,259 So it sticks to the sides of 423 00:15:51,260 --> 00:15:53,329 this chamber because this chamber is 424 00:15:53,330 --> 00:15:55,249 made of steel and apparently it sticks to 425 00:15:55,250 --> 00:15:56,659 the carbon in the steel. 426 00:15:56,660 --> 00:15:58,879 So that way you get a nice clean 427 00:15:58,880 --> 00:16:01,099 pour of pure aluminum out of 428 00:16:01,100 --> 00:16:02,449 out of this method. 429 00:16:02,450 --> 00:16:04,609 We're also using a stirring rod for it 430 00:16:04,610 --> 00:16:07,219 that's made of steel so that any of the 431 00:16:07,220 --> 00:16:08,899 any aluminum oxide that it happens to 432 00:16:08,900 --> 00:16:11,209 come into contact with also binds 433 00:16:11,210 --> 00:16:12,210 the starring Rod. 434 00:16:13,150 --> 00:16:15,429 We've got a burner there, 435 00:16:15,430 --> 00:16:17,499 we've used basically burners that 436 00:16:17,500 --> 00:16:18,909 we've picked up at our local hardware 437 00:16:18,910 --> 00:16:21,009 store and those have worked 438 00:16:21,010 --> 00:16:23,259 out fine, but over time they kind 439 00:16:23,260 --> 00:16:25,869 of get expensive to go through because 440 00:16:25,870 --> 00:16:27,579 one of them lasts like twenty, twenty 441 00:16:27,580 --> 00:16:28,599 five burns. 442 00:16:28,600 --> 00:16:30,219 And then something goes wrong with the 443 00:16:30,220 --> 00:16:32,049 end and you've got to go get another one. 444 00:16:32,050 --> 00:16:34,449 And they're not exactly cheap, 445 00:16:34,450 --> 00:16:35,889 like 40 bucks or so. 446 00:16:35,890 --> 00:16:37,299 So we went and found another 447 00:16:37,300 --> 00:16:39,609 Instructables for a homebuilt 448 00:16:39,610 --> 00:16:41,529 burner. That is what you see in the 449 00:16:41,530 --> 00:16:42,609 picture here. 450 00:16:42,610 --> 00:16:44,799 It's actually much solider 451 00:16:44,800 --> 00:16:46,959 construction. So we don't end up 452 00:16:46,960 --> 00:16:48,369 we haven't had any problems with it 453 00:16:48,370 --> 00:16:49,989 whatsoever. 454 00:16:49,990 --> 00:16:52,119 We're using basically the giant 455 00:16:52,120 --> 00:16:53,409 sized propane tanks. 456 00:16:53,410 --> 00:16:55,029 So you can see our line to the propane 457 00:16:55,030 --> 00:16:57,429 tank there. And we're using a regulator 458 00:16:57,430 --> 00:16:59,619 directly attached to the propane tank to 459 00:16:59,620 --> 00:17:01,749 control the to control the heat 460 00:17:01,750 --> 00:17:02,750 level and our burner. 461 00:17:07,130 --> 00:17:09,469 Now for the microwave molds themselves, 462 00:17:09,470 --> 00:17:10,519 this is actually where 463 00:17:11,569 --> 00:17:12,979 this is actually the exciting part of it 464 00:17:12,980 --> 00:17:13,939 to me. 465 00:17:13,940 --> 00:17:16,879 The microwave molds itself. 466 00:17:16,880 --> 00:17:19,338 You have to make up this investment, 467 00:17:19,339 --> 00:17:22,159 which is basically just a group of 468 00:17:22,160 --> 00:17:24,979 water and perlite 469 00:17:24,980 --> 00:17:27,229 and plaster of Paris. 470 00:17:27,230 --> 00:17:29,329 You then take your you 471 00:17:29,330 --> 00:17:31,489 then take your 3D printed object. 472 00:17:31,490 --> 00:17:34,159 You attach a series of spruce 473 00:17:34,160 --> 00:17:35,329 and inlets and 474 00:17:36,440 --> 00:17:38,179 you attach basically where your aluminum 475 00:17:38,180 --> 00:17:40,729 goes in and where your aluminum goes out. 476 00:17:40,730 --> 00:17:42,739 And then you put it into a piece of 477 00:17:42,740 --> 00:17:45,109 Tupperware that is very, 478 00:17:45,110 --> 00:17:47,059 very cheap and flexible because you want 479 00:17:47,060 --> 00:17:48,379 to be able to just pop this out. 480 00:17:48,380 --> 00:17:50,999 Don't use the solid stuff, use the 481 00:17:51,000 --> 00:17:53,089 in my case, the dollar store stuff. 482 00:17:53,090 --> 00:17:54,859 It works out very well. 483 00:17:54,860 --> 00:17:57,529 And you can just kind of pop the 484 00:17:57,530 --> 00:17:59,809 pop the whole 485 00:17:59,810 --> 00:18:02,029 combination of your 3D printed 486 00:18:02,030 --> 00:18:04,249 object in your investment material right 487 00:18:04,250 --> 00:18:05,689 out of the Tupperware works great. 488 00:18:09,460 --> 00:18:11,709 This here is one of the 3D printed 489 00:18:11,710 --> 00:18:14,499 objects being set up. 490 00:18:14,500 --> 00:18:16,119 This is actually one that I've got here 491 00:18:16,120 --> 00:18:17,139 on the table as well. 492 00:18:17,140 --> 00:18:19,179 So you can see the result. 493 00:18:19,180 --> 00:18:21,429 The Styrofoam there is for your 494 00:18:21,430 --> 00:18:23,089 inlet and outlet channels. 495 00:18:23,090 --> 00:18:25,179 So the Styrofoam 496 00:18:25,180 --> 00:18:27,279 on the right hand side 497 00:18:27,280 --> 00:18:29,319 is where we're going to be pouring in 498 00:18:29,320 --> 00:18:31,539 aluminum. And the Styrofoam on the left 499 00:18:31,540 --> 00:18:34,509 hand side is kind of where air goes out. 500 00:18:34,510 --> 00:18:36,249 As you can see, we attach where we're 501 00:18:36,250 --> 00:18:38,139 pouring in a little bit more to the 502 00:18:38,140 --> 00:18:40,539 object than the outside 503 00:18:40,540 --> 00:18:42,399 because we want a little bit of pressure 504 00:18:42,400 --> 00:18:44,109 at the object to make sure that the 505 00:18:44,110 --> 00:18:47,109 aluminum adheres to every contour 506 00:18:47,110 --> 00:18:49,359 of the the 507 00:18:49,360 --> 00:18:51,879 of the of the negative. 508 00:18:51,880 --> 00:18:54,189 So you end up with literally every ridge 509 00:18:54,190 --> 00:18:56,379 of your original 3D printed object 510 00:18:56,380 --> 00:18:58,329 visible in the aluminum result. 511 00:19:01,360 --> 00:19:03,549 To like like I said earlier, 512 00:19:03,550 --> 00:19:05,739 we're using as a scepter and we also use 513 00:19:05,740 --> 00:19:07,719 this the scepter in the microwaving 514 00:19:07,720 --> 00:19:09,939 process for our 3D printed 515 00:19:09,940 --> 00:19:12,039 parts. So the 3D printed 516 00:19:12,040 --> 00:19:13,809 parts, we basically take what you saw on 517 00:19:13,810 --> 00:19:16,029 the last slide and we 518 00:19:16,030 --> 00:19:18,669 just kind of make this spray here 519 00:19:18,670 --> 00:19:21,069 out of, again, the scepter, 520 00:19:21,070 --> 00:19:23,199 powder, sugar, 521 00:19:23,200 --> 00:19:25,419 water and a little bit of alcohol to get 522 00:19:25,420 --> 00:19:27,069 to beat up. 523 00:19:27,070 --> 00:19:29,229 And we kind of just spray the 524 00:19:29,230 --> 00:19:31,329 surface five or six times, letting it 525 00:19:31,330 --> 00:19:33,729 dry in between so that we get 526 00:19:33,730 --> 00:19:36,069 a microwave scepter right 527 00:19:36,070 --> 00:19:38,949 there at the 3D printed object. 528 00:19:38,950 --> 00:19:41,079 What this does is it allows us to 529 00:19:41,080 --> 00:19:43,179 basically use the mold since the 530 00:19:43,180 --> 00:19:45,789 mold is transparent to microwaves, the 531 00:19:45,790 --> 00:19:47,349 energy for the microwave, it actually 532 00:19:47,350 --> 00:19:49,479 goes directly to the 3D printed 533 00:19:49,480 --> 00:19:51,639 object and all of its guides and screws 534 00:19:51,640 --> 00:19:53,709 and skips up the whole process of having 535 00:19:53,710 --> 00:19:56,199 to having to heat up this 536 00:19:56,200 --> 00:19:58,329 item that is made necessarily 537 00:19:58,330 --> 00:20:00,699 out of highly heat resistant 538 00:20:00,700 --> 00:20:01,899 substances. 539 00:20:01,900 --> 00:20:04,179 So as a result, 540 00:20:04,180 --> 00:20:06,469 it cuts down the time considerably. 541 00:20:06,470 --> 00:20:08,949 We're looking at roughly two hours 542 00:20:08,950 --> 00:20:10,569 between the time in which we have a 3D 543 00:20:10,570 --> 00:20:12,519 printed part in our hand and the time at 544 00:20:12,520 --> 00:20:14,379 which we've got a mold in the microwave 545 00:20:14,380 --> 00:20:16,929 versus know the our approach 546 00:20:16,930 --> 00:20:18,939 of the standard lost play. 547 00:20:18,940 --> 00:20:21,099 So there's six hours of your life back 548 00:20:21,100 --> 00:20:23,109 and probably a little bit a little bit 549 00:20:23,110 --> 00:20:24,549 cheaper life insurance because you don't 550 00:20:24,550 --> 00:20:26,020 have to use propane for the step. 551 00:20:30,410 --> 00:20:32,749 This is one of the molds, actually, 552 00:20:32,750 --> 00:20:34,789 this might this might even be that mold, 553 00:20:34,790 --> 00:20:36,169 I don't quite I don't quite remember 554 00:20:36,170 --> 00:20:38,269 which one it is in the microwave 555 00:20:38,270 --> 00:20:39,979 actually being microwaved out. 556 00:20:39,980 --> 00:20:42,049 So we wait just long 557 00:20:42,050 --> 00:20:44,149 enough for the mold 558 00:20:44,150 --> 00:20:45,679 material to harden. 559 00:20:45,680 --> 00:20:47,959 Then we pop it out of the 560 00:20:47,960 --> 00:20:50,299 of the Tupperware container that we used 561 00:20:50,300 --> 00:20:52,819 and put it in the microwave and 562 00:20:52,820 --> 00:20:54,499 basically microwave it until we can get 563 00:20:54,500 --> 00:20:56,329 all the water to leave the mold. 564 00:20:56,330 --> 00:20:58,429 Normally you have to normally with 565 00:20:58,430 --> 00:21:00,439 lost play, you basically got to leave 566 00:21:00,440 --> 00:21:01,939 this thing sitting around long enough for 567 00:21:01,940 --> 00:21:04,009 it to get solid, which sometimes can 568 00:21:04,010 --> 00:21:06,589 be days depending on the size of your 569 00:21:06,590 --> 00:21:08,209 size of your mold. 570 00:21:08,210 --> 00:21:10,399 And in our case, we just 571 00:21:10,400 --> 00:21:11,389 completely cheat. 572 00:21:11,390 --> 00:21:13,219 We throw it in the microwave, we nuke it 573 00:21:13,220 --> 00:21:14,359 until the water is gone. 574 00:21:15,500 --> 00:21:18,039 Now, as is doing this, 575 00:21:18,040 --> 00:21:20,329 we have to microwave it on low 576 00:21:20,330 --> 00:21:22,729 because you don't want to basically 577 00:21:22,730 --> 00:21:24,559 cause air bubbles that are inside of it 578 00:21:24,560 --> 00:21:27,349 to expand from steam. 579 00:21:27,350 --> 00:21:29,449 And we actually had a lot 580 00:21:29,450 --> 00:21:31,459 of molds for a while that were exploding 581 00:21:31,460 --> 00:21:33,019 on us because we didn't know we didn't 582 00:21:33,020 --> 00:21:34,020 know what was going on with it. 583 00:21:35,240 --> 00:21:37,339 The the air bubbles were collecting 584 00:21:37,340 --> 00:21:39,169 all the steam, too much pressure on the 585 00:21:39,170 --> 00:21:40,489 inside of it. And you're just kind of 586 00:21:40,490 --> 00:21:42,409 sitting there and you hear a boom out of 587 00:21:42,410 --> 00:21:43,549 the microwave and all you've got is a 588 00:21:43,550 --> 00:21:44,550 mess. 589 00:21:45,500 --> 00:21:47,959 So what also happens 590 00:21:47,960 --> 00:21:50,119 is that the water that is exiting the 591 00:21:50,120 --> 00:21:52,399 object will try to beat 592 00:21:52,400 --> 00:21:53,779 up on the surface. 593 00:21:53,780 --> 00:21:55,939 So basically, your microwave tries 594 00:21:55,940 --> 00:21:56,940 to flood. 595 00:21:58,040 --> 00:22:00,559 You have to get in there with a towel and 596 00:22:00,560 --> 00:22:02,839 about every 15 minutes to 597 00:22:02,840 --> 00:22:04,969 it out and remove all the water 598 00:22:04,970 --> 00:22:05,869 that you can find. 599 00:22:05,870 --> 00:22:08,209 We did kill at least one microwave by 600 00:22:08,210 --> 00:22:09,210 flooding. 601 00:22:14,040 --> 00:22:16,649 Once you have your mold all 602 00:22:16,650 --> 00:22:18,599 once your plastic has actually burned out 603 00:22:18,600 --> 00:22:20,849 of the mold, then you're 604 00:22:20,850 --> 00:22:23,549 ready to pour in your aluminum. 605 00:22:23,550 --> 00:22:25,739 Now, in order to get your plastic to burn 606 00:22:25,740 --> 00:22:27,779 out, of course, it takes it takes a 607 00:22:27,780 --> 00:22:29,549 little while to burn the plastic as well. 608 00:22:29,550 --> 00:22:31,739 You're looking at about an hour on 609 00:22:31,740 --> 00:22:34,229 about an hour on simple objects 610 00:22:34,230 --> 00:22:35,819 to burn the plastic. 611 00:22:35,820 --> 00:22:37,919 And the the real way you can tell 612 00:22:37,920 --> 00:22:39,209 that you're done burning plastic, of 613 00:22:39,210 --> 00:22:40,529 course, because you can't look inside of 614 00:22:40,530 --> 00:22:42,869 the mold is you kind of 615 00:22:42,870 --> 00:22:44,939 microwave it until such a point is 616 00:22:44,940 --> 00:22:47,009 you can see smoke leaving 617 00:22:47,010 --> 00:22:49,079 the microwave, but you 618 00:22:49,080 --> 00:22:51,119 try not to microwave it much more than 619 00:22:51,120 --> 00:22:53,759 that because you want to make sure that 620 00:22:53,760 --> 00:22:56,279 you don't overheat the mold itself. 621 00:22:56,280 --> 00:22:58,619 If you put too much energy into it, 622 00:22:58,620 --> 00:23:00,149 the mold itself will try to burn. 623 00:23:00,150 --> 00:23:01,529 And at the at the point at which your 624 00:23:01,530 --> 00:23:03,929 mold burns, you're pretty much done. 625 00:23:03,930 --> 00:23:06,359 So you kind of microwave it just 626 00:23:06,360 --> 00:23:07,709 it just at the right point. 627 00:23:07,710 --> 00:23:09,659 This, of course, varies per machine. 628 00:23:09,660 --> 00:23:11,909 I have found no no 629 00:23:11,910 --> 00:23:14,219 universal methods when it comes to 630 00:23:14,220 --> 00:23:15,539 what settings should be for what 631 00:23:15,540 --> 00:23:16,709 microwaves. 632 00:23:16,710 --> 00:23:18,449 So it's very trial and error. 633 00:23:18,450 --> 00:23:20,369 Expect your first couple of parts just to 634 00:23:20,370 --> 00:23:21,370 die. 635 00:23:21,840 --> 00:23:24,209 Now, once you have a mold in your hands, 636 00:23:24,210 --> 00:23:26,309 you've got to put these screw extenders, 637 00:23:26,310 --> 00:23:27,959 which is which are those two Red Bull 638 00:23:27,960 --> 00:23:29,369 cans that you see there? 639 00:23:29,370 --> 00:23:31,619 Those are for the inlets in the outlets 640 00:23:31,620 --> 00:23:32,729 for the aluminum. 641 00:23:32,730 --> 00:23:34,919 So we basically bury 642 00:23:34,920 --> 00:23:37,199 that in a box of sand and 643 00:23:37,200 --> 00:23:39,389 get the sand all the way up to the top 644 00:23:39,390 --> 00:23:41,189 of it that we whenever we pour in our 645 00:23:41,190 --> 00:23:43,379 aluminum, the sand kind of just 646 00:23:43,380 --> 00:23:45,569 holds everything in place because 647 00:23:45,570 --> 00:23:47,789 those Red Bull cans do not put up to a 648 00:23:47,790 --> 00:23:49,259 liquid aluminum very long. 649 00:23:49,260 --> 00:23:50,260 So. 650 00:23:54,880 --> 00:23:56,979 This is us actually using 651 00:23:56,980 --> 00:23:59,199 our Little Forge 652 00:23:59,200 --> 00:24:01,269 to pour aluminum into the 653 00:24:01,270 --> 00:24:02,739 mold that you just saw. 654 00:24:02,740 --> 00:24:04,869 So this is this is what 655 00:24:04,870 --> 00:24:06,519 it looks like in production. 656 00:24:06,520 --> 00:24:08,949 You've got a vessel full of aluminum 657 00:24:08,950 --> 00:24:10,869 that you have superheated, which is to 658 00:24:10,870 --> 00:24:13,059 say that you've brought to at least eight 659 00:24:13,060 --> 00:24:15,159 hundred degrees Celsius 660 00:24:15,160 --> 00:24:17,409 with standard propane and 661 00:24:17,410 --> 00:24:19,419 then you kind of just pour it into your 662 00:24:19,420 --> 00:24:20,499 microwaved mold. 663 00:24:20,500 --> 00:24:22,509 This is this is what I consider our 664 00:24:22,510 --> 00:24:24,939 temporary hybrid approach, because 665 00:24:24,940 --> 00:24:26,869 the little forage well, the little us to 666 00:24:26,870 --> 00:24:28,899 get the job done as far as melting 667 00:24:28,900 --> 00:24:29,649 aluminum. 668 00:24:29,650 --> 00:24:31,689 But it's nowhere near big enough for you 669 00:24:31,690 --> 00:24:33,759 to put any 3D printed objects 670 00:24:33,760 --> 00:24:35,589 and molds and do any of the cooking that 671 00:24:35,590 --> 00:24:37,419 you normally would for standard lost 672 00:24:37,420 --> 00:24:39,699 play. So this gives you 673 00:24:39,700 --> 00:24:41,979 roughly just enough 674 00:24:41,980 --> 00:24:44,529 hardware in a small space 675 00:24:44,530 --> 00:24:46,089 that you can get this process done. 676 00:24:49,920 --> 00:24:52,199 As you can see, the there's 677 00:24:52,200 --> 00:24:54,189 usually a little bit of plastic residue 678 00:24:54,190 --> 00:24:55,799 still left on the inside, but you want to 679 00:24:55,800 --> 00:24:58,229 make sure there's as little as possible 680 00:24:58,230 --> 00:25:00,569 and still in your mold 681 00:25:00,570 --> 00:25:02,309 and it does catch fire. 682 00:25:02,310 --> 00:25:04,829 And in addition, so does the 683 00:25:04,830 --> 00:25:07,109 paint on the Red Bull cans. 684 00:25:07,110 --> 00:25:08,669 So does the duct tape. 685 00:25:08,670 --> 00:25:10,469 So does that. But none of this matters 686 00:25:10,470 --> 00:25:11,549 because at that point, you've got your 687 00:25:11,550 --> 00:25:12,900 aluminum in the right place and. 688 00:25:17,300 --> 00:25:19,009 Once you're done, you end up with this, 689 00:25:19,010 --> 00:25:21,109 you know, mold that has been 690 00:25:21,110 --> 00:25:22,879 well, it's had aluminum poured and you've 691 00:25:22,880 --> 00:25:24,559 got to kind of just break it apart and 692 00:25:24,560 --> 00:25:26,839 then you get it kind of like unwrapping 693 00:25:26,840 --> 00:25:27,859 Christmas presents. 694 00:25:27,860 --> 00:25:29,599 You get whatever you've got on the 695 00:25:29,600 --> 00:25:31,549 inside. You're like, oh, is this really? 696 00:25:31,550 --> 00:25:32,550 Oh, really? 697 00:25:33,470 --> 00:25:34,519 It's kind of nice. 698 00:25:38,950 --> 00:25:41,109 As I was saying earlier, the the 699 00:25:41,110 --> 00:25:43,839 combination of using a small 700 00:25:43,840 --> 00:25:45,909 propane fired forge 701 00:25:45,910 --> 00:25:48,249 and using using 702 00:25:48,250 --> 00:25:50,289 a microwave for your molding techniques 703 00:25:50,290 --> 00:25:52,389 means that you get to get to 704 00:25:52,390 --> 00:25:55,089 rapidly do this process. 705 00:25:55,090 --> 00:25:57,159 I have periods 706 00:25:57,160 --> 00:25:59,379 of about four to five hours gone from 3D 707 00:25:59,380 --> 00:26:01,449 printed thing to waiting 708 00:26:01,450 --> 00:26:04,149 for my aluminum to cool versus 709 00:26:04,150 --> 00:26:06,249 the standard process, which sometimes can 710 00:26:06,250 --> 00:26:08,559 take days depending on how thick 711 00:26:08,560 --> 00:26:09,759 your mold is and. 712 00:26:12,430 --> 00:26:14,739 So this here is actually one of our 713 00:26:14,740 --> 00:26:16,869 first good successes, it's my 714 00:26:16,870 --> 00:26:18,999 3D printer printing more 3-D printers, 715 00:26:19,000 --> 00:26:20,589 which seems to be all I do with my 3D 716 00:26:20,590 --> 00:26:21,590 printer. 717 00:26:24,330 --> 00:26:26,359 Well, I have been building them for three 718 00:26:26,360 --> 00:26:28,819 years, I have I 719 00:26:28,820 --> 00:26:30,949 don't know what it is, but all I see is 720 00:26:30,950 --> 00:26:32,659 more printer parts. Every time I try, you 721 00:26:32,660 --> 00:26:33,889 know, every time I try printing 722 00:26:33,890 --> 00:26:36,199 something. So I reprinted 723 00:26:36,200 --> 00:26:38,269 my machine over again. 724 00:26:38,270 --> 00:26:40,189 Of course, most people with a process 725 00:26:40,190 --> 00:26:41,569 style machine are going to reprint their 726 00:26:41,570 --> 00:26:43,129 machine to get better parts. 727 00:26:43,130 --> 00:26:45,259 Well, I reprinted my machine 728 00:26:45,260 --> 00:26:47,839 partially to get aluminum parts, 729 00:26:47,840 --> 00:26:50,029 so it made a very good practical 730 00:26:50,030 --> 00:26:50,959 application. 731 00:26:50,960 --> 00:26:53,149 Now, when you're printing a plastic 732 00:26:53,150 --> 00:26:55,279 part, you can, of course, get away with 733 00:26:55,280 --> 00:26:58,159 having basically almost no infill 734 00:26:58,160 --> 00:27:00,079 because, well, you don't have to worry 735 00:27:00,080 --> 00:27:01,189 about how solid the part is. 736 00:27:01,190 --> 00:27:02,629 You just have to make sure that it will 737 00:27:02,630 --> 00:27:04,909 hold liquid from being inside 738 00:27:04,910 --> 00:27:06,380 of it. That's a pretty low bar. 739 00:27:07,580 --> 00:27:09,859 You're you also print the parts 740 00:27:09,860 --> 00:27:11,869 at one hundred and three percent because 741 00:27:11,870 --> 00:27:13,879 as I was saying earlier, aluminum 742 00:27:13,880 --> 00:27:15,769 contracts just a little bit. 743 00:27:15,770 --> 00:27:18,169 So you basically just hit your stretch 744 00:27:18,170 --> 00:27:19,999 in whatever particular program you're 745 00:27:20,000 --> 00:27:21,709 using to print and stretch it up to a 746 00:27:21,710 --> 00:27:22,969 hundred and three percent, then hit 747 00:27:22,970 --> 00:27:24,739 print. That's really all you have to know 748 00:27:24,740 --> 00:27:26,869 about printing the plastic at a time. 749 00:27:26,870 --> 00:27:28,459 It actually means that your plastic parts 750 00:27:28,460 --> 00:27:30,169 will print pretty quickly, too, because, 751 00:27:30,170 --> 00:27:32,599 I mean, I know I have spent four hours 752 00:27:32,600 --> 00:27:34,819 trying to print a solid extruder before 753 00:27:34,820 --> 00:27:36,889 and when I can spend an hour and a 754 00:27:36,890 --> 00:27:38,839 half printing a solid extruder and then 755 00:27:38,840 --> 00:27:41,269 turn it into a piece of aluminum in four 756 00:27:41,270 --> 00:27:43,369 hours. That's that to me is 757 00:27:43,370 --> 00:27:44,599 a much nicer scenario. 758 00:27:47,780 --> 00:27:50,389 These are this is me attempting 759 00:27:50,390 --> 00:27:52,399 to print extruders out of my machine, 760 00:27:52,400 --> 00:27:54,019 that's still a little that's still a 761 00:27:54,020 --> 00:27:56,149 little bit too large for our process 762 00:27:56,150 --> 00:27:57,049 right now. 763 00:27:57,050 --> 00:27:59,209 As you can see, the the one 764 00:27:59,210 --> 00:28:01,099 on the right has most of its components 765 00:28:01,100 --> 00:28:03,259 intact. But you see the 766 00:28:03,260 --> 00:28:05,119 you see the inlets in the outlets for the 767 00:28:05,120 --> 00:28:06,319 aluminum there. 768 00:28:06,320 --> 00:28:08,809 I put them way too thick 769 00:28:08,810 --> 00:28:10,489 and way too attached. 770 00:28:10,490 --> 00:28:12,799 And one thing to note about this aluminum 771 00:28:12,800 --> 00:28:15,109 that comes out is it's actually, 772 00:28:15,110 --> 00:28:17,299 in my experience, harder and 773 00:28:17,300 --> 00:28:19,219 solid or the most aluminum that you deal 774 00:28:19,220 --> 00:28:20,220 with. 775 00:28:20,660 --> 00:28:23,839 And so as a result, 776 00:28:23,840 --> 00:28:25,939 well, as a result, it's very 777 00:28:25,940 --> 00:28:27,619 difficult to pull away from the 778 00:28:27,620 --> 00:28:29,719 extrusion, to pull away from the object 779 00:28:29,720 --> 00:28:31,069 itself, the one on the left. 780 00:28:31,070 --> 00:28:34,519 I actually left a little bit of space 781 00:28:34,520 --> 00:28:36,019 so that I could try to cut it off. 782 00:28:38,670 --> 00:28:40,799 This is a suspension component 783 00:28:40,800 --> 00:28:43,409 for kind of this little 784 00:28:43,410 --> 00:28:45,599 RC car type thing that we were trying 785 00:28:45,600 --> 00:28:47,789 to produce, it did not turn 786 00:28:47,790 --> 00:28:49,679 out well because we casted it. 787 00:28:49,680 --> 00:28:51,519 And instead of using sand, we use 788 00:28:51,520 --> 00:28:52,919 vermiculite, which is a really, really 789 00:28:52,920 --> 00:28:54,449 bad idea. Don't do that. 790 00:28:54,450 --> 00:28:55,450 It's too light. 791 00:28:57,690 --> 00:28:59,549 As I said, we've been working with 792 00:28:59,550 --> 00:29:01,799 Implicit CAD, which is a 793 00:29:01,800 --> 00:29:03,869 CAD application for designing 794 00:29:03,870 --> 00:29:06,270 our parts. We like parametric parts. 795 00:29:07,610 --> 00:29:09,779 So when designing, you know, 796 00:29:09,780 --> 00:29:12,049 when trying to design a series of car 797 00:29:12,050 --> 00:29:13,489 parts, we want to make sure everything 798 00:29:13,490 --> 00:29:15,769 lines up so we're using a 799 00:29:15,770 --> 00:29:19,009 functional based language to actually 800 00:29:19,010 --> 00:29:20,330 design components. 801 00:29:23,430 --> 00:29:25,679 We had some people trying to get 802 00:29:25,680 --> 00:29:27,389 us to three d print their objects, of 803 00:29:27,390 --> 00:29:29,549 course, using using 804 00:29:29,550 --> 00:29:31,739 various non free software like 805 00:29:31,740 --> 00:29:32,939 AutoCAD, for instance. 806 00:29:34,500 --> 00:29:36,719 It just it just doesn't have what we need 807 00:29:36,720 --> 00:29:37,720 it. 808 00:29:40,220 --> 00:29:42,289 Implicit cad is our it's 809 00:29:42,290 --> 00:29:43,609 our language of choice, and we kind of 810 00:29:43,610 --> 00:29:46,399 just use it to compile a design from 811 00:29:46,400 --> 00:29:47,929 a solid piece. 812 00:29:47,930 --> 00:29:50,149 Well, from a just a plain 813 00:29:50,150 --> 00:29:52,399 text file all the way into an STL file 814 00:29:52,400 --> 00:29:53,400 for printing. 815 00:29:55,100 --> 00:29:57,619 This is kind of what some of the examples 816 00:29:57,620 --> 00:29:59,809 in the language look like, so 817 00:29:59,810 --> 00:30:01,639 in order to implement like a test suite 818 00:30:01,640 --> 00:30:03,919 in it, we basically took 819 00:30:03,920 --> 00:30:04,920 and. 820 00:30:05,470 --> 00:30:07,629 Well, we basically designed the same 821 00:30:07,630 --> 00:30:09,489 component as many different ways as we 822 00:30:09,490 --> 00:30:11,589 could in the language so that we could 823 00:30:11,590 --> 00:30:13,720 compare the modified some of the styles. 824 00:30:17,250 --> 00:30:19,049 Designing things like a gear, and it was 825 00:30:19,050 --> 00:30:21,359 a reasonably difficult 826 00:30:21,360 --> 00:30:24,119 I had to learn trigonometry to do this, 827 00:30:24,120 --> 00:30:25,979 which was not easy for me at all 828 00:30:27,330 --> 00:30:29,609 because I'm I'm actually natively 829 00:30:29,610 --> 00:30:31,859 a C programmer. So all of this all 830 00:30:31,860 --> 00:30:34,109 this 3D design, all this aluminum 831 00:30:34,110 --> 00:30:36,299 pouring, it's it was it was not 832 00:30:36,300 --> 00:30:37,829 necessarily my forte, but I had to get 833 00:30:37,830 --> 00:30:38,830 away from a keyboard. 834 00:30:40,950 --> 00:30:43,379 The language allows for some 835 00:30:43,380 --> 00:30:46,139 severely rounded objects. 836 00:30:46,140 --> 00:30:48,089 That's why we've labeled these all 837 00:30:48,090 --> 00:30:49,649 unicorns, because I don't even know how 838 00:30:49,650 --> 00:30:51,899 to do this and many other languages, 839 00:30:51,900 --> 00:30:54,329 but it's like the object on the right. 840 00:30:54,330 --> 00:30:57,179 It's kind of twisted as it goes upward, 841 00:30:57,180 --> 00:30:59,969 which is a function on an extrude 842 00:30:59,970 --> 00:31:00,649 of a. 843 00:31:00,650 --> 00:31:02,819 Yeah, I can't I can almost not 844 00:31:02,820 --> 00:31:04,649 even explain it myself, but it works out 845 00:31:04,650 --> 00:31:05,650 very well. 846 00:31:08,670 --> 00:31:10,859 We ended up having a whole lot of 847 00:31:10,860 --> 00:31:12,569 issues with the software because it had 848 00:31:12,570 --> 00:31:14,699 been abandoned for about a year, 849 00:31:14,700 --> 00:31:16,619 and any time something's abandoned like 850 00:31:16,620 --> 00:31:18,659 that, you end up with that rot. 851 00:31:18,660 --> 00:31:20,879 So we ended 852 00:31:20,880 --> 00:31:22,979 up throwing at a test suite on it 853 00:31:22,980 --> 00:31:25,079 and basically taking over the 854 00:31:25,080 --> 00:31:27,509 project with the original maintainers 855 00:31:27,510 --> 00:31:28,510 blessing. 856 00:31:31,410 --> 00:31:33,509 This is that 857 00:31:33,510 --> 00:31:35,699 I still don't quite know what this 858 00:31:35,700 --> 00:31:37,949 is, to be honest, it was trying 859 00:31:37,950 --> 00:31:39,839 to be a gear just like the gears earlier, 860 00:31:39,840 --> 00:31:41,789 but I passed in the wrong value to the 861 00:31:41,790 --> 00:31:43,859 wrong function, and I don't think that's 862 00:31:43,860 --> 00:31:44,940 five teeth anymore. 863 00:31:50,020 --> 00:31:52,119 As I was saying, the software ends up 864 00:31:52,120 --> 00:31:53,529 with some interesting bugs. 865 00:31:53,530 --> 00:31:55,239 So this is attempting to be one of those 866 00:31:55,240 --> 00:31:57,399 disks that I was showing earlier, 867 00:31:57,400 --> 00:31:59,589 but it multidimensional scale 868 00:31:59,590 --> 00:32:01,269 function was just kind of broken. 869 00:32:01,270 --> 00:32:03,879 So it's an overall mix. 870 00:32:03,880 --> 00:32:05,439 It makes sense when you know the code, 871 00:32:05,440 --> 00:32:07,809 but when 872 00:32:07,810 --> 00:32:09,879 we're comparing the files, it 873 00:32:09,880 --> 00:32:11,109 sticks out like a sore thumb. 874 00:32:11,110 --> 00:32:13,539 So we get to run tests of each individual 875 00:32:13,540 --> 00:32:14,540 section of language. 876 00:32:16,260 --> 00:32:18,479 The the fuzz in the middle of that, 877 00:32:18,480 --> 00:32:20,069 I still don't quite know what's causing 878 00:32:20,070 --> 00:32:20,669 that. 879 00:32:20,670 --> 00:32:22,229 That, again, is another attempt to be a 880 00:32:22,230 --> 00:32:23,909 disc with a hole in the middle. 881 00:32:23,910 --> 00:32:24,910 No. 882 00:32:27,470 --> 00:32:28,470 So. 883 00:32:30,540 --> 00:32:33,299 So this here is an attempt to be a gear, 884 00:32:33,300 --> 00:32:35,429 it has five teeth, the five 885 00:32:35,430 --> 00:32:37,889 teeth are technically around 886 00:32:37,890 --> 00:32:39,539 it, but 887 00:32:40,950 --> 00:32:42,539 that's about all you can say for this 888 00:32:42,540 --> 00:32:45,109 one. The five teeth are if 889 00:32:45,110 --> 00:32:46,379 you actually break out the measuring 890 00:32:46,380 --> 00:32:48,449 stick, they're not even actually evenly 891 00:32:48,450 --> 00:32:50,759 spaced in addition to the one being, 892 00:32:50,760 --> 00:32:53,039 you know, and that is not space 893 00:32:53,040 --> 00:32:54,389 for a six one on the other side. 894 00:32:54,390 --> 00:32:56,039 If you measure it, it's not there. 895 00:32:56,040 --> 00:32:58,109 It's like, you know, it would need six 896 00:32:58,110 --> 00:32:59,699 and a half teeth for this. 897 00:32:59,700 --> 00:33:02,339 This was a regression in the language, 898 00:33:02,340 --> 00:33:04,409 which is to say that at 899 00:33:04,410 --> 00:33:06,389 some point in the language, this exact 900 00:33:06,390 --> 00:33:08,009 code worked. I can give you a get 901 00:33:08,010 --> 00:33:10,499 revision. I swear it did work, but 902 00:33:10,500 --> 00:33:11,969 then somebody changed something. 903 00:33:11,970 --> 00:33:14,460 And this is currently the result. 904 00:33:19,790 --> 00:33:21,289 We've been we've been working with 905 00:33:21,290 --> 00:33:23,029 implicit cattle here for about three 906 00:33:23,030 --> 00:33:25,159 months now, so I've been sort of 907 00:33:25,160 --> 00:33:27,949 just tearing apart the language, which 908 00:33:27,950 --> 00:33:29,629 works out pretty well for me. 909 00:33:29,630 --> 00:33:32,059 I mean, it's all functional, 910 00:33:32,060 --> 00:33:33,469 just straight math. 911 00:33:33,470 --> 00:33:35,869 And it's based on Haskell, 912 00:33:35,870 --> 00:33:37,969 which I'm starting to enjoy, even 913 00:33:37,970 --> 00:33:39,679 though I really don't understand at least 914 00:33:39,680 --> 00:33:40,680 half of it. 915 00:33:42,290 --> 00:33:44,479 But the nice part for me is 916 00:33:44,480 --> 00:33:46,819 as a software developer, I kind of 917 00:33:46,820 --> 00:33:49,069 I kind of got my start start 918 00:33:49,070 --> 00:33:51,709 pretty early working on Ray Tracer's, 919 00:33:51,710 --> 00:33:54,109 which is some complicated 920 00:33:54,110 --> 00:33:55,759 math, but it's something that I got very 921 00:33:55,760 --> 00:33:57,649 comfortable with at an early age. 922 00:33:57,650 --> 00:33:59,719 And this engine kind of uses a tracer 923 00:33:59,720 --> 00:34:01,819 on the inside of it in order to 924 00:34:01,820 --> 00:34:03,589 produce in order to decide where the 925 00:34:03,590 --> 00:34:04,590 triangles go. 926 00:34:09,870 --> 00:34:11,669 This is a powder. 927 00:34:11,670 --> 00:34:13,079 This is one of the more complicated 928 00:34:13,080 --> 00:34:14,189 things I've been producing. 929 00:34:14,190 --> 00:34:16,319 I think I may has some of the most 930 00:34:16,320 --> 00:34:18,359 complicated, implicit CAD files ever at 931 00:34:18,360 --> 00:34:19,360 this point. 932 00:34:20,130 --> 00:34:22,408 Some like, you know, nine hundred lines 933 00:34:22,409 --> 00:34:24,269 of just object description. 934 00:34:24,270 --> 00:34:26,549 So this here is basically 935 00:34:26,550 --> 00:34:28,859 a ring around a 936 00:34:28,860 --> 00:34:31,169 track mold where we're making 937 00:34:31,170 --> 00:34:33,599 these very flexible tracks 938 00:34:33,600 --> 00:34:35,908 for a series of for a series 939 00:34:35,909 --> 00:34:38,369 of basically RC cars. 940 00:34:38,370 --> 00:34:40,289 So they have kind of little bitty tank 941 00:34:40,290 --> 00:34:41,968 trends that are, you know, that can 942 00:34:41,969 --> 00:34:43,709 climb, for instance, the steps up to the 943 00:34:43,710 --> 00:34:46,109 stairs. So this is kind of the outside 944 00:34:46,110 --> 00:34:48,059 of that track system. 945 00:34:48,060 --> 00:34:49,499 This is an attempt to be the track 946 00:34:49,500 --> 00:34:50,488 itself. 947 00:34:50,489 --> 00:34:52,619 As you can probably see, there's still 948 00:34:52,620 --> 00:34:54,569 a little bit of gaps in some of those 949 00:34:54,570 --> 00:34:57,469 teeth, which I don't quite 950 00:34:57,470 --> 00:34:58,919 I still don't quite understand. 951 00:34:58,920 --> 00:35:00,689 There's a couple of bugs still in the 952 00:35:00,690 --> 00:35:03,059 implicit CAD system that I'm ferreting 953 00:35:03,060 --> 00:35:04,060 out. 954 00:35:05,370 --> 00:35:07,019 The same thing is kind of holding here. 955 00:35:07,020 --> 00:35:08,579 As you can tell, this is kind of trying 956 00:35:08,580 --> 00:35:10,499 to be the inside of that mold. 957 00:35:10,500 --> 00:35:12,719 But see all the little threads 958 00:35:12,720 --> 00:35:14,219 that are sort of standing up there, 959 00:35:15,980 --> 00:35:17,699 I don't quite know what's going on with 960 00:35:17,700 --> 00:35:19,589 that either. A union of a union, of a 961 00:35:19,590 --> 00:35:22,050 circle of a something of that sort. 962 00:35:25,680 --> 00:35:27,509 Now, the reason that we actually did this 963 00:35:27,510 --> 00:35:29,669 all was to 964 00:35:29,670 --> 00:35:31,979 was to try to have aluminum parts for 965 00:35:31,980 --> 00:35:34,469 our automotive process so 966 00:35:35,670 --> 00:35:37,679 that that was actually why I started down 967 00:35:37,680 --> 00:35:39,719 the path of aluminum printing even before 968 00:35:39,720 --> 00:35:41,909 my even before my hands started to give 969 00:35:41,910 --> 00:35:43,589 me any sort of difficulties. 970 00:35:43,590 --> 00:35:45,659 I was I was trying to build a 971 00:35:45,660 --> 00:35:47,369 aluminum extruder for quite a long time 972 00:35:47,370 --> 00:35:49,109 and just kind of had to throw my hands up 973 00:35:49,110 --> 00:35:50,110 at it. 974 00:35:50,700 --> 00:35:52,679 We're we're looking at this is basically 975 00:35:52,680 --> 00:35:54,689 two layers, which is to say that the 976 00:35:54,690 --> 00:35:56,429 first thing that we're trying to produce 977 00:35:56,430 --> 00:35:58,529 is we're calling it Allen, 978 00:35:58,530 --> 00:36:01,049 which is a attempt to 979 00:36:01,050 --> 00:36:03,389 put put parts on 980 00:36:03,390 --> 00:36:05,189 people's currently existing vehicles, let 981 00:36:05,190 --> 00:36:07,289 them maintain it longer, let them add 982 00:36:07,290 --> 00:36:08,879 whatever sort of flares they want to the 983 00:36:08,880 --> 00:36:11,039 vehicle. For instance, one thing 984 00:36:11,040 --> 00:36:12,809 that I walked outside and immediately 985 00:36:12,810 --> 00:36:15,389 noticed about my cars was 986 00:36:15,390 --> 00:36:16,559 no folding mirrors. 987 00:36:16,560 --> 00:36:17,849 You know, folding mirrors are kind of 988 00:36:17,850 --> 00:36:20,069 nice, but it just was not 989 00:36:20,070 --> 00:36:21,299 an option in that year model. 990 00:36:21,300 --> 00:36:23,759 And there's just nothing I can do that 991 00:36:23,760 --> 00:36:26,069 other than try to 3D print 992 00:36:26,070 --> 00:36:27,070 the whole process. 993 00:36:31,550 --> 00:36:34,189 When we're trying to build up replacement 994 00:36:34,190 --> 00:36:35,929 parts for these cars, we've, of course, 995 00:36:35,930 --> 00:36:38,149 got to completely reconsider 996 00:36:38,150 --> 00:36:40,789 how security is working. 997 00:36:40,790 --> 00:36:42,949 So in our current in 998 00:36:42,950 --> 00:36:45,139 our current automobiles. 999 00:36:45,140 --> 00:36:47,179 Well, the newer ones are a security 1000 00:36:47,180 --> 00:36:48,829 nightmare and the older ones just don't 1001 00:36:48,830 --> 00:36:50,089 have all the features that we're used to 1002 00:36:50,090 --> 00:36:52,339 liking. So it's 1003 00:36:52,340 --> 00:36:53,809 like, how many of these talks have you 1004 00:36:53,810 --> 00:36:55,189 been to or how many of these have you 1005 00:36:55,190 --> 00:36:57,349 seen where somebody is owning 1006 00:36:57,350 --> 00:36:59,539 the car of the week and showing you how 1007 00:36:59,540 --> 00:37:01,969 you can slam on the brakes or how you can 1008 00:37:01,970 --> 00:37:04,039 hold down the accelerator or 1009 00:37:04,040 --> 00:37:05,779 lock everyone in the vehicle? 1010 00:37:05,780 --> 00:37:07,939 The computing security in a car is 1011 00:37:07,940 --> 00:37:10,339 a nightmare because from my perspective, 1012 00:37:10,340 --> 00:37:12,409 we tend to treat car computing more 1013 00:37:12,410 --> 00:37:14,149 like a wireless router than we do a 1014 00:37:14,150 --> 00:37:15,229 hospital. 1015 00:37:15,230 --> 00:37:17,539 But wireless routers, when they crash, 1016 00:37:17,540 --> 00:37:19,699 no one dies, cars when they crash. 1017 00:37:19,700 --> 00:37:21,799 Well, a hospital is 1018 00:37:21,800 --> 00:37:22,849 involved one way or another. 1019 00:37:26,780 --> 00:37:29,269 We've been trying to 1020 00:37:29,270 --> 00:37:31,399 trying to design the internal 1021 00:37:31,400 --> 00:37:33,799 network of it, sort of in a segmented 1022 00:37:33,800 --> 00:37:36,229 off system so that 1023 00:37:36,230 --> 00:37:37,939 so that if somebody ends up owning your 1024 00:37:37,940 --> 00:37:39,889 CD player, your CD player isn't able to 1025 00:37:39,890 --> 00:37:42,289 tell your brakes, hey, come on now. 1026 00:37:42,290 --> 00:37:44,839 It's having this sort of separation 1027 00:37:44,840 --> 00:37:46,010 makes some good sense. 1028 00:37:47,330 --> 00:37:49,519 We're we're, of course, doing this from 1029 00:37:49,520 --> 00:37:51,589 a we're looking 1030 00:37:51,590 --> 00:37:53,929 at this sort of as the blue team approach 1031 00:37:53,930 --> 00:37:56,089 versus your red team approach for your 1032 00:37:56,090 --> 00:37:57,229 current cars. 1033 00:37:57,230 --> 00:37:59,539 Most people most people who are working 1034 00:37:59,540 --> 00:38:01,609 in car security right now are working 1035 00:38:01,610 --> 00:38:03,979 in the ability to break into 1036 00:38:03,980 --> 00:38:06,199 them, not necessarily in the ability 1037 00:38:06,200 --> 00:38:07,729 to actually build them up from the 1038 00:38:07,730 --> 00:38:08,369 ground. 1039 00:38:08,370 --> 00:38:10,159 So we're trying to build them up sort of 1040 00:38:10,160 --> 00:38:12,380 in a from scratch situation. 1041 00:38:15,110 --> 00:38:17,329 We're licensing everything as 1042 00:38:17,330 --> 00:38:20,029 freely as possible and 1043 00:38:20,030 --> 00:38:22,339 as freely as we can even consider, so 1044 00:38:22,340 --> 00:38:24,169 we've done a lot of research into 1045 00:38:24,170 --> 00:38:26,299 hardware licensing and had to had 1046 00:38:26,300 --> 00:38:28,399 to figure the I think 1047 00:38:28,400 --> 00:38:30,469 that the Taproom L. 1048 00:38:30,470 --> 00:38:32,539 is currently as as 1049 00:38:32,540 --> 00:38:35,119 open as it gets at the moment, but 1050 00:38:35,120 --> 00:38:37,489 it's kind of an attempt to be the GPL 1051 00:38:37,490 --> 00:38:38,559 in the hardware world. 1052 00:38:40,250 --> 00:38:41,480 And of course, we're using 1053 00:38:42,500 --> 00:38:44,569 version three for all of our software 1054 00:38:44,570 --> 00:38:45,919 designs and all the software that we're 1055 00:38:45,920 --> 00:38:46,939 using. 1056 00:38:46,940 --> 00:38:48,889 We've got a canaria on our site. 1057 00:38:48,890 --> 00:38:50,959 So if we end up with any sort of 1058 00:38:50,960 --> 00:38:53,029 a you know, we can't talk about 1059 00:38:53,030 --> 00:38:54,859 whatever letter we just received type of 1060 00:38:54,860 --> 00:38:56,659 scenario, you can at least tell that 1061 00:38:56,660 --> 00:38:58,699 we're not talking about it and not 1062 00:38:58,700 --> 00:39:00,319 updating our Canaria date. 1063 00:39:00,320 --> 00:39:02,599 And so you can tell if we've 1064 00:39:02,600 --> 00:39:04,849 received our you know, you must implant 1065 00:39:04,850 --> 00:39:07,159 this chip to all cars. 1066 00:39:07,160 --> 00:39:09,319 Notice we are talking, 1067 00:39:09,320 --> 00:39:10,929 of course, out of the United States. 1068 00:39:10,930 --> 00:39:12,530 So minor concern. 1069 00:39:17,240 --> 00:39:19,429 And as I was saying earlier, we're trying 1070 00:39:19,430 --> 00:39:20,899 to segment all the networks, this 1071 00:39:20,900 --> 00:39:23,269 includes having deciding 1072 00:39:23,270 --> 00:39:25,639 what direction data data must communicate 1073 00:39:25,640 --> 00:39:27,769 and data must not communicate. 1074 00:39:27,770 --> 00:39:30,079 So we're basically 1075 00:39:30,080 --> 00:39:32,179 trying to limit it as much as 1076 00:39:32,180 --> 00:39:34,399 possible inside as 1077 00:39:34,400 --> 00:39:36,139 much communication inside of the vehicle 1078 00:39:36,140 --> 00:39:37,140 as possible. 1079 00:39:39,040 --> 00:39:40,959 Now, at the end of this, we end up with 1080 00:39:40,960 --> 00:39:43,239 basically your garage being 1081 00:39:43,240 --> 00:39:45,099 a being what 1082 00:39:46,270 --> 00:39:47,979 what I think my father would have 1083 00:39:47,980 --> 00:39:50,079 referred to as, you know, a garage back 1084 00:39:50,080 --> 00:39:51,909 in the 60s where people actually tooled 1085 00:39:51,910 --> 00:39:53,949 with their cars, improved their cars, 1086 00:39:53,950 --> 00:39:56,109 played with played with it and 1087 00:39:56,110 --> 00:39:58,179 manufactured small components 1088 00:39:58,180 --> 00:40:00,219 of it on their own. Nowadays, there's no 1089 00:40:00,220 --> 00:40:01,989 such creature. Do you have a do you have 1090 00:40:01,990 --> 00:40:03,679 a plastic mold in your garage? 1091 00:40:03,680 --> 00:40:05,829 I mean, none of this is acceptable, 1092 00:40:05,830 --> 00:40:07,749 but back whenever cars were made of steel 1093 00:40:07,750 --> 00:40:10,180 or made of more durable materials. 1094 00:40:12,310 --> 00:40:13,349 That was a possibility. 1095 00:40:14,620 --> 00:40:16,689 Now, of course, there 1096 00:40:16,690 --> 00:40:19,029 are a couple of problems with trying 1097 00:40:19,030 --> 00:40:21,279 to manufacture these things, which 1098 00:40:21,280 --> 00:40:23,679 is we've got a lot of federal standards 1099 00:40:23,680 --> 00:40:25,539 and federal standards involved, which 1100 00:40:25,540 --> 00:40:27,669 seems to be our biggest, biggest 1101 00:40:27,670 --> 00:40:28,989 issue. 1102 00:40:28,990 --> 00:40:31,179 And there's a whole lot 1103 00:40:31,180 --> 00:40:33,279 of communication occurring in modern 1104 00:40:33,280 --> 00:40:35,019 cars that we're trying to eliminate. 1105 00:40:35,020 --> 00:40:37,119 So we're trying to make this 1106 00:40:37,120 --> 00:40:38,859 something where you can do all of this 1107 00:40:38,860 --> 00:40:39,860 work yourself. 1108 00:40:43,430 --> 00:40:45,170 Well, that didn't format, right? 1109 00:40:47,780 --> 00:40:49,549 This is what you get for compiling your 1110 00:40:49,550 --> 00:40:50,989 presentation on the stage. 1111 00:40:52,400 --> 00:40:54,589 As you can tell, we're looking for 1112 00:40:54,590 --> 00:40:56,209 as much help as we can. 1113 00:40:56,210 --> 00:40:58,369 So if you would get 1114 00:40:58,370 --> 00:41:00,829 me an email, contact me on Diaspora. 1115 00:41:00,830 --> 00:41:03,439 And when you're emailing, try to 1116 00:41:03,440 --> 00:41:05,589 try to online wrap that PGP 1117 00:41:06,980 --> 00:41:07,980 fingerprint. 1118 00:41:08,660 --> 00:41:09,660 Thank you kindly. 1119 00:41:20,210 --> 00:41:22,619 We will have a small Q&A session, 1120 00:41:22,620 --> 00:41:24,449 please line up the microphones throughout 1121 00:41:24,450 --> 00:41:26,609 the audience and we will 1122 00:41:26,610 --> 00:41:27,610 call you out. 1123 00:41:28,920 --> 00:41:30,060 Please ask questions. 1124 00:41:37,010 --> 00:41:38,479 OK, microphone three. 1125 00:41:39,650 --> 00:41:42,279 All right, but 1126 00:41:42,280 --> 00:41:43,099 hi. 1127 00:41:43,100 --> 00:41:45,379 Um, the the 1128 00:41:45,380 --> 00:41:47,149 intersecting face problem that you were 1129 00:41:47,150 --> 00:41:48,799 showing in some of your renderings, I 1130 00:41:48,800 --> 00:41:50,959 think that's actually a map. 1131 00:41:50,960 --> 00:41:52,939 That's a result of the math library as 1132 00:41:52,940 --> 00:41:54,799 well. Lack of precision. 1133 00:41:54,800 --> 00:41:57,149 You're getting very close to the surface. 1134 00:41:57,150 --> 00:41:59,719 I've seen this in other 3D modeling where 1135 00:41:59,720 --> 00:42:01,849 if you you get like just 1136 00:42:01,850 --> 00:42:04,189 exploding geometry nans 1137 00:42:04,190 --> 00:42:05,719 all over the place. 1138 00:42:05,720 --> 00:42:07,819 And if that if you shift the camera by 1139 00:42:07,820 --> 00:42:09,889 even like a tenth 1140 00:42:09,890 --> 00:42:12,049 of a degree, suddenly things start to 1141 00:42:12,050 --> 00:42:14,179 resolve. It's because you're just 1142 00:42:14,180 --> 00:42:17,269 there. Your position is not high enough 1143 00:42:17,270 --> 00:42:19,099 in open. Eskild, where I've run into this 1144 00:42:19,100 --> 00:42:20,869 problem before I get around it by just 1145 00:42:20,870 --> 00:42:22,999 adding like another tenth 1146 00:42:23,000 --> 00:42:25,099 of a millimeter to my model and it 1147 00:42:25,100 --> 00:42:27,289 pokes through successfully and you 1148 00:42:27,290 --> 00:42:28,969 get the actual hole that you're looking 1149 00:42:28,970 --> 00:42:29,539 for. 1150 00:42:29,540 --> 00:42:32,089 Yeah, that's that's absolutely 1151 00:42:32,090 --> 00:42:32,569 correct. 1152 00:42:32,570 --> 00:42:35,029 And kind of since I'm maintaining 1153 00:42:35,030 --> 00:42:37,159 implicit CAD, I have sort of not fixed 1154 00:42:37,160 --> 00:42:39,559 my model in that fashion intentionally 1155 00:42:39,560 --> 00:42:41,699 to remind me that this 1156 00:42:41,700 --> 00:42:43,849 sort of above exists so that I can 1157 00:42:43,850 --> 00:42:46,159 get the math to come out exactly right. 1158 00:42:46,160 --> 00:42:48,289 The the little threads and Neel's there 1159 00:42:48,290 --> 00:42:49,279 as a 3D print. 1160 00:42:49,280 --> 00:42:50,749 That object, of course, those are just 1161 00:42:50,750 --> 00:42:51,739 going to fall off anyway. 1162 00:42:51,740 --> 00:42:53,779 So I did have a quick question. 1163 00:42:53,780 --> 00:42:55,939 I missed the slide that 1164 00:42:55,940 --> 00:42:57,679 it looks implicit. 1165 00:42:57,680 --> 00:42:59,659 Cat looks a lot like open cat. 1166 00:42:59,660 --> 00:43:01,939 It does. Was is it a fork or 1167 00:43:01,940 --> 00:43:04,009 is it inspired or is it just 1168 00:43:04,010 --> 00:43:06,079 Haskell versus whatever 1169 00:43:06,080 --> 00:43:08,239 the contrived language they're using? 1170 00:43:08,240 --> 00:43:10,369 It is kind of inspired by, which 1171 00:43:10,370 --> 00:43:12,919 is to say that implicit 1172 00:43:12,920 --> 00:43:15,199 cat uses what's called s CAD 1173 00:43:15,200 --> 00:43:17,659 as its language. So it should be CAD, 1174 00:43:17,660 --> 00:43:20,059 but it's being interpreted functionally 1175 00:43:20,060 --> 00:43:21,799 and the semantics are a little bit 1176 00:43:21,800 --> 00:43:22,800 different. So 1177 00:43:23,900 --> 00:43:25,999 it is a derivative of 1178 00:43:26,000 --> 00:43:27,619 the language, but the code bases are 1179 00:43:27,620 --> 00:43:29,119 completely different. 1180 00:43:29,120 --> 00:43:31,069 OK, so this is a new original thing that 1181 00:43:31,070 --> 00:43:32,719 I should go check out then. 1182 00:43:32,720 --> 00:43:33,829 Thank you. 1183 00:43:33,830 --> 00:43:35,929 I have another question for. 1184 00:43:38,810 --> 00:43:39,810 Hello. 1185 00:43:40,280 --> 00:43:41,479 OK. 1186 00:43:41,480 --> 00:43:44,359 You mentioned silicone covid a lot. 1187 00:43:44,360 --> 00:43:46,579 Would it be suitable to use only 1188 00:43:46,580 --> 00:43:48,739 Copple for the same 1189 00:43:48,740 --> 00:43:49,740 purpose? 1190 00:43:50,540 --> 00:43:51,829 Actually, not at all. 1191 00:43:51,830 --> 00:43:53,989 What's what's going on there is in 1192 00:43:53,990 --> 00:43:55,909 a microwave, whenever you're actually 1193 00:43:55,910 --> 00:43:58,279 microwaving any material, 1194 00:43:58,280 --> 00:44:00,589 the microwave energy is being 1195 00:44:00,590 --> 00:44:02,719 is being absorbed because it's a 1196 00:44:02,720 --> 00:44:04,909 it's an electromagnetic vibration and 1197 00:44:04,910 --> 00:44:07,429 you need a molecule in there 1198 00:44:07,430 --> 00:44:09,439 that is not symmetrical. 1199 00:44:09,440 --> 00:44:11,749 And the silicon carbide is 1200 00:44:11,750 --> 00:44:13,219 kind of just a little bit off. 1201 00:44:13,220 --> 00:44:15,439 If you got pure carbon, then even 1202 00:44:15,440 --> 00:44:17,779 carbon, even carbon chains, 1203 00:44:17,780 --> 00:44:19,879 they don't vibrate so they don't heat up 1204 00:44:19,880 --> 00:44:20,880 at all. 1205 00:44:22,400 --> 00:44:23,400 Microphone sorry, 1206 00:44:25,470 --> 00:44:26,369 you had a problem. 1207 00:44:26,370 --> 00:44:28,429 This was tripped up by this 1208 00:44:28,430 --> 00:44:30,529 in your place of 1209 00:44:30,530 --> 00:44:32,389 off with the exploding bolts. 1210 00:44:34,700 --> 00:44:35,700 Did you try it 1211 00:44:36,830 --> 00:44:39,499 investigating the 1212 00:44:39,500 --> 00:44:40,500 mixing methods for 1213 00:44:41,660 --> 00:44:44,029 the Crystal Palace used for making 1214 00:44:44,030 --> 00:44:46,159 porcelain molds, because 1215 00:44:46,160 --> 00:44:48,529 you can mix your place very 1216 00:44:48,530 --> 00:44:50,599 well with this 1217 00:44:50,600 --> 00:44:51,969 in the first place. 1218 00:44:51,970 --> 00:44:54,559 Um, part of the problem there is 1219 00:44:54,560 --> 00:44:57,349 the perlite substance itself 1220 00:44:57,350 --> 00:45:00,109 basically is almost an air bubble 1221 00:45:00,110 --> 00:45:02,419 that is trapped inside of a 1222 00:45:02,420 --> 00:45:03,109 mineral. 1223 00:45:03,110 --> 00:45:05,299 So perlite is just very spongy 1224 00:45:05,300 --> 00:45:07,519 mineral that we're just kind of all 1225 00:45:07,520 --> 00:45:08,689 throwing in our gardens. 1226 00:45:08,690 --> 00:45:10,009 And there's not that much of it, 1227 00:45:10,010 --> 00:45:11,209 unfortunately. 1228 00:45:11,210 --> 00:45:13,699 But as a result, there are always 1229 00:45:13,700 --> 00:45:15,589 air bubbles because we use the we use the 1230 00:45:15,590 --> 00:45:17,719 perlite sort of space it out 1231 00:45:17,720 --> 00:45:19,999 because the plaster of Paris will 1232 00:45:20,000 --> 00:45:22,159 not only will it absorb microwaves 1233 00:45:22,160 --> 00:45:24,289 just slightly, but in addition, 1234 00:45:24,290 --> 00:45:26,689 plaster of Paris is not enough to stand 1235 00:45:26,690 --> 00:45:28,129 up to liquid aluminum. 1236 00:45:28,130 --> 00:45:30,229 The plaster of Paris gets burned 1237 00:45:30,230 --> 00:45:32,449 just a hair every time. 1238 00:45:32,450 --> 00:45:34,309 So there is actually just a little bit of 1239 00:45:34,310 --> 00:45:36,109 burned plaster of Paris on the inside of 1240 00:45:36,110 --> 00:45:38,179 the mold, the perlite kind of, you know, 1241 00:45:38,180 --> 00:45:40,039 spaces things out so that you have that 1242 00:45:40,040 --> 00:45:41,040 insulating effect. 1243 00:45:42,410 --> 00:45:44,839 And one question, did you 1244 00:45:44,840 --> 00:45:47,209 try having could cast 1245 00:45:47,210 --> 00:45:49,489 aluminum parts in your furnace? 1246 00:45:50,780 --> 00:45:52,849 I have not I'm 1247 00:45:52,850 --> 00:45:54,679 not even familiar with the process, 1248 00:45:54,680 --> 00:45:55,680 actually. 1249 00:45:57,680 --> 00:46:00,199 Microphone for thank you for the 1250 00:46:00,200 --> 00:46:01,219 great talk. 1251 00:46:01,220 --> 00:46:03,439 Thank you. Prove my 1252 00:46:03,440 --> 00:46:05,209 interest is in psychonauts, which is 1253 00:46:05,210 --> 00:46:07,089 hucking of the human consciousness. 1254 00:46:07,090 --> 00:46:09,409 And you talked about biohacking being 1255 00:46:09,410 --> 00:46:11,629 a long term goal to expand 1256 00:46:11,630 --> 00:46:12,739 on that. 1257 00:46:12,740 --> 00:46:14,509 Well, actually, part of the reason that 1258 00:46:14,510 --> 00:46:16,699 I've been trying to trying 1259 00:46:16,700 --> 00:46:18,469 to build 3-D printers in the first place, 1260 00:46:18,470 --> 00:46:20,749 I'm previously from the medical 1261 00:46:20,750 --> 00:46:22,969 records industry, so I've 1262 00:46:22,970 --> 00:46:24,799 always been trying to kind of advance our 1263 00:46:24,800 --> 00:46:26,269 medical industry in one fashion or 1264 00:46:26,270 --> 00:46:28,279 another. But in this case, I've been 1265 00:46:28,280 --> 00:46:29,899 looking at my 3D printer and going, how 1266 00:46:29,900 --> 00:46:31,039 do I use that? 1267 00:46:31,040 --> 00:46:32,989 Well, the precision is not there in a 1268 00:46:32,990 --> 00:46:34,039 plastic 3-D printer. 1269 00:46:34,040 --> 00:46:35,509 Everything is wiggling around. 1270 00:46:35,510 --> 00:46:37,159 No matter how no matter how you handle 1271 00:46:37,160 --> 00:46:39,109 it, you're looking at one hundred microns 1272 00:46:39,110 --> 00:46:40,939 of precision, which is just horrible 1273 00:46:40,940 --> 00:46:42,259 whenever you're trying to produce any 1274 00:46:42,260 --> 00:46:44,119 sort of biological material. 1275 00:46:44,120 --> 00:46:46,429 So I looked at that and went, 1276 00:46:46,430 --> 00:46:48,409 how do I improve the quality of the 1277 00:46:48,410 --> 00:46:49,219 printer? 1278 00:46:49,220 --> 00:46:51,589 And so I decided solid alone parts 1279 00:46:51,590 --> 00:46:53,329 would probably increase that quality to 1280 00:46:53,330 --> 00:46:55,429 such a point that we can print and find 1281 00:46:55,430 --> 00:46:58,219 enough detail to start actually attacking 1282 00:46:58,220 --> 00:47:00,860 real bioprinting problems. 1283 00:47:01,940 --> 00:47:03,889 And do you have a plan on when you when 1284 00:47:03,890 --> 00:47:06,109 you start to work on this after 1285 00:47:06,110 --> 00:47:08,449 my first car is off the line. 1286 00:47:08,450 --> 00:47:09,889 Best of luck. Thank you so much. 1287 00:47:09,890 --> 00:47:11,129 Thank you. 1288 00:47:11,130 --> 00:47:13,249 Microphone three, thank you very 1289 00:47:13,250 --> 00:47:15,709 much for the very cool talk. 1290 00:47:15,710 --> 00:47:16,999 I just want to ask a question. 1291 00:47:17,000 --> 00:47:19,339 Have you considered 1292 00:47:19,340 --> 00:47:21,439 the other way a removal 1293 00:47:21,440 --> 00:47:23,569 methods such as, you know, is 1294 00:47:23,570 --> 00:47:25,529 like CMC or something? 1295 00:47:25,530 --> 00:47:26,959 Lots of lots of mimic. 1296 00:47:26,960 --> 00:47:28,159 What's the what's the advantage? 1297 00:47:28,160 --> 00:47:30,949 Disadvantage of the advantages 1298 00:47:30,950 --> 00:47:32,629 while getting a hold of large chunks of 1299 00:47:32,630 --> 00:47:34,549 aluminum is expensive. 1300 00:47:34,550 --> 00:47:36,649 I mean, and this way I'm literally 1301 00:47:36,650 --> 00:47:38,869 just taking I'm literally recycling old 1302 00:47:38,870 --> 00:47:40,429 bicycle rims that I'm getting for free 1303 00:47:40,430 --> 00:47:40,909 here. 1304 00:47:40,910 --> 00:47:43,129 So it's a lot it's 1305 00:47:43,130 --> 00:47:44,899 a lot more it's a lot cheaper that way. 1306 00:47:44,900 --> 00:47:45,900 Right. 1307 00:47:46,640 --> 00:47:48,349 OK, but but it would still work. 1308 00:47:48,350 --> 00:47:50,539 Like if you sort of 1309 00:47:50,540 --> 00:47:52,309 whenever you're doing that kind of work, 1310 00:47:52,310 --> 00:47:54,499 you end up having to have three or 1311 00:47:54,500 --> 00:47:56,659 four or five access machines 1312 00:47:56,660 --> 00:47:58,609 to get the sort of, you know, angle on 1313 00:47:58,610 --> 00:48:00,679 the inside of the angles upward in 1314 00:48:00,680 --> 00:48:01,959 the hole on the middle of the. 1315 00:48:01,960 --> 00:48:04,009 Yeah, for and 3D printing really just 1316 00:48:04,010 --> 00:48:05,509 gets around all that problem for you 1317 00:48:05,510 --> 00:48:06,649 already. 1318 00:48:06,650 --> 00:48:07,099 All right. 1319 00:48:07,100 --> 00:48:09,400 Thanks, Michael, for 1320 00:48:10,430 --> 00:48:12,469 things and everything. 1321 00:48:12,470 --> 00:48:14,419 I just have one question with respect to 1322 00:48:14,420 --> 00:48:16,879 your finances, I actually have absolutely 1323 00:48:16,880 --> 00:48:18,589 no idea. But a friend of mine used 1324 00:48:18,590 --> 00:48:20,899 induction heating to to my 1325 00:48:20,900 --> 00:48:23,539 aluminum or whatever. 1326 00:48:23,540 --> 00:48:25,369 And have you looked into that? 1327 00:48:25,370 --> 00:48:26,899 Because that looked really impressive, 1328 00:48:26,900 --> 00:48:28,279 what that guy did. And he was like 1329 00:48:28,280 --> 00:48:29,719 fifteen at that time. 1330 00:48:29,720 --> 00:48:31,249 He probably shouldn't have done that in 1331 00:48:31,250 --> 00:48:32,540 his own house. But 1332 00:48:34,400 --> 00:48:37,339 again, he a liquid aluminum indoor. 1333 00:48:37,340 --> 00:48:39,049 There's a rule for that in my house, I've 1334 00:48:39,050 --> 00:48:40,090 only broken it once, 1335 00:48:42,320 --> 00:48:44,459 so he seemed to be able to melt the 1336 00:48:44,460 --> 00:48:46,909 amounts of aluminum that you are showing, 1337 00:48:46,910 --> 00:48:48,889 liking him in a matter of three minutes 1338 00:48:48,890 --> 00:48:49,939 or so. 1339 00:48:49,940 --> 00:48:53,149 Induction heating does work, 1340 00:48:53,150 --> 00:48:55,309 but at least the one unit that 1341 00:48:55,310 --> 00:48:57,829 I have seen that has been documented 1342 00:48:57,830 --> 00:49:00,109 for this purpose, it takes two 1343 00:49:00,110 --> 00:49:01,459 hundred and forty volts, which is not 1344 00:49:01,460 --> 00:49:03,649 even available in the house that I'm in. 1345 00:49:03,650 --> 00:49:05,869 So just just to start with, it's 1346 00:49:05,870 --> 00:49:07,999 consuming a lot of energy now. 1347 00:49:08,000 --> 00:49:10,039 A microwave consumes a lot of energy to 1348 00:49:10,040 --> 00:49:11,749 fifteen hundred watts times, you know, 1349 00:49:11,750 --> 00:49:12,799 two hours. 1350 00:49:12,800 --> 00:49:14,119 But at the rate at which I'm getting 1351 00:49:14,120 --> 00:49:16,369 that, it's roughly twenty five cents 1352 00:49:16,370 --> 00:49:17,299 an hour. 1353 00:49:17,300 --> 00:49:19,140 So pretty cheap. 1354 00:49:21,230 --> 00:49:23,899 We may have two questions left. 1355 00:49:23,900 --> 00:49:25,730 So microphone to 1356 00:49:26,840 --> 00:49:29,059 all of those things for this morning. 1357 00:49:29,060 --> 00:49:31,159 Talk show, 1358 00:49:31,160 --> 00:49:32,720 calculator to your energy 1359 00:49:33,890 --> 00:49:35,059 source. 1360 00:49:35,060 --> 00:49:36,949 Have you calculated your energy costs 1361 00:49:36,950 --> 00:49:39,469 because it's nice to do such 1362 00:49:39,470 --> 00:49:41,419 stuff. Do it. Just do it yourself. 1363 00:49:41,420 --> 00:49:43,519 But I think 1364 00:49:43,520 --> 00:49:45,349 aluminum industry and heavy metal 1365 00:49:45,350 --> 00:49:46,819 industry is one of the most power 1366 00:49:46,820 --> 00:49:48,439 consuming industries in the world. 1367 00:49:48,440 --> 00:49:50,209 So how can we scale that energy 1368 00:49:50,210 --> 00:49:51,739 consumption don't. 1369 00:49:51,740 --> 00:49:53,899 Actually, that was part of the part 1370 00:49:53,900 --> 00:49:56,149 of the win from my perspective, because 1371 00:49:56,150 --> 00:49:58,429 by taking eight hours of propane 1372 00:49:58,430 --> 00:49:59,929 and converting it into two hours of 1373 00:49:59,930 --> 00:50:02,119 electricity, well, one, it's a lot easier 1374 00:50:02,120 --> 00:50:02,929 to produce. 1375 00:50:02,930 --> 00:50:04,579 It's a lot easier to produce electricity 1376 00:50:04,580 --> 00:50:07,369 via actually useful 1377 00:50:07,370 --> 00:50:09,619 actually carbon neutral means 1378 00:50:09,620 --> 00:50:12,619 and in another form for 1379 00:50:12,620 --> 00:50:13,519 another part of it. 1380 00:50:13,520 --> 00:50:15,169 Basically, I'm getting my energy at 1381 00:50:15,170 --> 00:50:17,389 twenty five cents for 1382 00:50:17,390 --> 00:50:20,119 twenty five cents per microwave per hour, 1383 00:50:20,120 --> 00:50:22,249 which is probably the first time that 1384 00:50:22,250 --> 00:50:23,599 unions has ever been used 1385 00:50:25,010 --> 00:50:27,499 and the 1386 00:50:27,500 --> 00:50:28,550 as a result of that. 1387 00:50:30,380 --> 00:50:32,479 Being able to microwave 1388 00:50:32,480 --> 00:50:34,579 down these rims, 1389 00:50:34,580 --> 00:50:36,289 being able to melt down currently 1390 00:50:36,290 --> 00:50:38,569 existing aluminum into new shapes 1391 00:50:38,570 --> 00:50:40,969 gives us a lot lower power 1392 00:50:40,970 --> 00:50:42,839 consumption than the manufacture of the 1393 00:50:42,840 --> 00:50:45,229 stuff. And in my case, I'm literally 1394 00:50:45,230 --> 00:50:46,819 keeping aluminum from going straight into 1395 00:50:46,820 --> 00:50:48,709 the straight into the landfill. 1396 00:50:48,710 --> 00:50:50,869 So even even my failures of 1397 00:50:50,870 --> 00:50:52,429 parts turn out to be 1398 00:50:53,720 --> 00:50:55,189 I can throw them back in. 1399 00:50:55,190 --> 00:50:56,779 I don't have to consume all the energy it 1400 00:50:56,780 --> 00:50:58,909 takes to actually separate aluminum from 1401 00:50:58,910 --> 00:51:01,009 bauxite. That's actually your real 1402 00:51:01,010 --> 00:51:02,449 high energy consumption. 1403 00:51:02,450 --> 00:51:05,149 So. Ninety five percent of the energy 1404 00:51:05,150 --> 00:51:07,369 that is being wasted was wasted 1405 00:51:07,370 --> 00:51:09,379 in the production, changing it from one 1406 00:51:09,380 --> 00:51:10,519 aluminum shape to another. 1407 00:51:10,520 --> 00:51:12,679 Aluminum shape is actually a really 1408 00:51:12,680 --> 00:51:14,780 low energy cost, comparatively. 1409 00:51:17,340 --> 00:51:18,869 OK, microphone three, 1410 00:51:21,360 --> 00:51:23,399 you mentioned using the steel tanks, but 1411 00:51:23,400 --> 00:51:25,109 did you do you actually need any sort of 1412 00:51:25,110 --> 00:51:27,239 additional flux or anything to 1413 00:51:27,240 --> 00:51:28,609 work with aluminum like this? 1414 00:51:28,610 --> 00:51:29,879 Actually, not at all. 1415 00:51:29,880 --> 00:51:31,439 It worked out, worked out quite 1416 00:51:31,440 --> 00:51:32,549 excellently. 1417 00:51:32,550 --> 00:51:34,679 They still holds onto 1418 00:51:34,680 --> 00:51:36,749 the aluminum, basically to the 1419 00:51:36,750 --> 00:51:38,999 aluminum oxide, just kind of bong's right 1420 00:51:39,000 --> 00:51:41,219 there at the edges. So after 1421 00:51:41,220 --> 00:51:42,839 those steel tanks only lasts about three 1422 00:51:42,840 --> 00:51:43,979 or four prints. 1423 00:51:43,980 --> 00:51:45,959 And by the time you're done, you've got 1424 00:51:45,960 --> 00:51:48,269 about two or three centimeters worth 1425 00:51:48,270 --> 00:51:50,369 of aluminum oxide just all over 1426 00:51:50,370 --> 00:51:51,389 the edges of the tank. 1427 00:51:51,390 --> 00:51:53,369 And it doesn't have as much volume to 1428 00:51:53,370 --> 00:51:55,379 begin with anyway. 1429 00:51:55,380 --> 00:51:57,929 So no flexes involved? 1430 00:51:57,930 --> 00:51:59,129 No. 1431 00:51:59,130 --> 00:52:01,049 The most complicated part of that is when 1432 00:52:01,050 --> 00:52:02,429 you're trying to heat up your first 1433 00:52:02,430 --> 00:52:04,379 little speck of aluminum, make it a 1434 00:52:04,380 --> 00:52:06,239 little speck of aluminum, because, of 1435 00:52:06,240 --> 00:52:08,759 course, aluminum conducts heat very well, 1436 00:52:08,760 --> 00:52:11,009 even even in its liquid state. 1437 00:52:11,010 --> 00:52:12,989 So if you're trying to heat up a large 1438 00:52:12,990 --> 00:52:14,909 block of aluminum in your forge, you've 1439 00:52:14,910 --> 00:52:16,439 really got to throw in an itty bitty 1440 00:52:16,440 --> 00:52:18,599 piece to get liquid first 1441 00:52:18,600 --> 00:52:20,159 and then start feeding in bigger and 1442 00:52:20,160 --> 00:52:20,879 bigger pieces. 1443 00:52:20,880 --> 00:52:23,129 We actually start with a piece of our Red 1444 00:52:23,130 --> 00:52:25,469 Bull cans as a 1445 00:52:25,470 --> 00:52:26,879 as part of the starter. 1446 00:52:31,440 --> 00:52:33,869 OK, we just 1447 00:52:33,870 --> 00:52:36,509 try to make the camera work here 1448 00:52:36,510 --> 00:52:38,849 and you may show us some of your 1449 00:52:38,850 --> 00:52:39,850 work here. 1450 00:52:42,090 --> 00:52:44,220 Last last chance, 1451 00:52:45,330 --> 00:52:46,330 please, please, 1452 00:52:47,500 --> 00:52:48,500 please. 1453 00:52:55,710 --> 00:52:56,939 Something happened. Yeah. 1454 00:53:01,320 --> 00:53:03,329 Actually, I have one photo that was in 1455 00:53:03,330 --> 00:53:05,489 the slides, but 1456 00:53:05,490 --> 00:53:07,829 that doesn't show you the 1457 00:53:07,830 --> 00:53:08,489 OK. 1458 00:53:08,490 --> 00:53:09,490 Yeah. 1459 00:53:10,650 --> 00:53:11,820 OK, let's take. 1460 00:53:16,790 --> 00:53:17,790 Can we move 1461 00:53:19,550 --> 00:53:21,769 this piece here if 1462 00:53:21,770 --> 00:53:23,179 we can actually get it 1463 00:53:24,260 --> 00:53:25,550 visible yet for. 1464 00:53:28,530 --> 00:53:29,530 No, Zoome. 1465 00:53:31,780 --> 00:53:32,780 OK, 1466 00:53:33,870 --> 00:53:34,839 OK, there we go. 1467 00:53:34,840 --> 00:53:37,479 This is, like I said, one of the as 1468 00:53:37,480 --> 00:53:38,859 you can tell, I'm kind of a little bit 1469 00:53:38,860 --> 00:53:41,169 addicted to Red Bull sugar free whenever 1470 00:53:41,170 --> 00:53:42,819 we're doing this. 1471 00:53:42,820 --> 00:53:45,039 So, yeah, lots of runs down 1472 00:53:45,040 --> 00:53:47,229 to the local market to pick up Red Bull 1473 00:53:47,230 --> 00:53:49,899 cans for our Subaru inlets. 1474 00:53:49,900 --> 00:53:51,639 So those are kind of our extenders. 1475 00:53:51,640 --> 00:53:52,989 And this is what it looks like when you 1476 00:53:52,990 --> 00:53:55,509 get one directly out of 1477 00:53:55,510 --> 00:53:58,509 directly out of the process. 1478 00:53:58,510 --> 00:54:00,609 So it's like the the only thing 1479 00:54:00,610 --> 00:54:01,959 here. 1480 00:54:01,960 --> 00:54:03,429 The other component that was interesting 1481 00:54:03,430 --> 00:54:05,769 from my perspective is this one here 1482 00:54:05,770 --> 00:54:07,989 is the raw chunk of aluminum 1483 00:54:07,990 --> 00:54:10,149 that we got out of the 1484 00:54:10,150 --> 00:54:12,519 out of our process itself. 1485 00:54:12,520 --> 00:54:14,559 This is from the microwave forge. 1486 00:54:14,560 --> 00:54:16,779 So I've only seen about 1487 00:54:16,780 --> 00:54:18,759 I've honestly only seen about seven or 1488 00:54:18,760 --> 00:54:21,099 eight examples online of 1489 00:54:21,100 --> 00:54:23,469 people actually getting a microwave 1490 00:54:23,470 --> 00:54:25,419 to work for this. So I'm pretty proud of 1491 00:54:25,420 --> 00:54:27,519 this one little chunk because it took 1492 00:54:27,520 --> 00:54:29,529 a lot of work. This used to be some 1493 00:54:29,530 --> 00:54:31,420 Pentium four heat sinks. 1494 00:54:34,600 --> 00:54:36,089 Apparently it's not just the Pentium for 1495 00:54:36,090 --> 00:54:37,090 this amount. 1496 00:54:38,590 --> 00:54:41,019 This here is, of course, the the section 1497 00:54:41,020 --> 00:54:43,299 of the the section 1498 00:54:43,300 --> 00:54:44,769 of a processed style printer. 1499 00:54:44,770 --> 00:54:47,319 This is called the LCS vertex 1500 00:54:47,320 --> 00:54:49,539 with foot. If I remember correctly. 1501 00:54:49,540 --> 00:54:51,639 It's out on Thingiverse, so. 1502 00:54:53,190 --> 00:54:55,559 You can see just some minor defects 1503 00:54:55,560 --> 00:54:57,329 in it, if I get the angle just right, you 1504 00:54:57,330 --> 00:54:59,069 can see that little crack there. 1505 00:54:59,070 --> 00:55:00,779 That's a little air bubble that was in 1506 00:55:00,780 --> 00:55:02,759 the in the mold. 1507 00:55:02,760 --> 00:55:04,189 Well, in the 1508 00:55:05,520 --> 00:55:07,739 that's a section of plastic or 1509 00:55:07,740 --> 00:55:09,629 an air or an air bubble that was in the 1510 00:55:09,630 --> 00:55:11,429 aluminum when the aluminum went through. 1511 00:55:11,430 --> 00:55:12,899 But the part itself is not only 1512 00:55:12,900 --> 00:55:14,789 serviceable, I have printed with it on 1513 00:55:14,790 --> 00:55:16,979 the machine. So functionality 1514 00:55:16,980 --> 00:55:17,980 wins the day there. 1515 00:55:22,700 --> 00:55:24,260 So we are right on time. 1516 00:55:25,780 --> 00:55:28,179 Thanks to Laura Long-Term and 1517 00:55:28,180 --> 00:55:30,139 to your long term, sorry 1518 00:55:31,520 --> 00:55:32,839 for the nice talk. 1519 00:55:32,840 --> 00:55:35,149 Please take your trash out 1520 00:55:35,150 --> 00:55:36,150 and 1521 00:55:37,520 --> 00:55:39,349 the next talk will be reproducible. 1522 00:55:39,350 --> 00:55:41,660 Build's, thank you kindly.