I'm an Engineer. This ChatGPT Test Scared Me. — Transcript

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1. 0:00Hey, it's me, Michael. And if you're an
2. 0:02engineer, you're a draftsman, you're a
3. 0:04CAD person, I want you to know that you
4. 0:06are sitting exactly right now where
5. 0:08computer programmers were 2 years ago.
6. 0:11And Claude,
7. 0:14Gemini,
8. 0:15and OpenAI are coming for your jobs
9. 0:19next.
10. 0:20>> [music]
11. 0:22>> And I say this seriously, not clickbait,
12. 0:25as a mechanical engineer. It started for
13. 0:27me with this flashlight from Olight.
14. 0:30And I frequently test laser scanners
15. 0:33that allow you to create a point cloud
16. 0:36and reverse engineer objects like this.
17. 0:39And I had done such a thing with
18. 0:42Creality's CR Scan program and created a
19. 0:45point cloud for this flashlight. But can
20. 0:47you see here how there are sections of
21. 0:50it where it's not quite joined together?
22. 0:53There's broken places where I couldn't
23. 0:55get the scanner in there. And then
24. 0:57there's places where there's spaces
25. 0:59right in between there where it just
26. 1:01fills it in. It's kind of ugly. You can
27. 1:04sort of see where the on-off switch is.
28. 1:07You can sort of see that there's a bezel
29. 1:09there where the light shines through.
30. 1:11And that actually came out nice, that
31. 1:14on-off switch. But the point is, to get
32. 1:17from that scan
33. 1:19to an editable solid to make meaningful
34. 1:22things like cases and covers and handles
35. 1:26and clips,
36. 1:27there are a number of steps in between
37. 1:30that required you to create construction
38. 1:32planes and slices and
39. 1:36I had to watch dozens and dozens of
40. 1:38hours of YouTube to learn these reverse
41. 1:41engineering techniques, and I'm not very
42. 1:42good at it. All I know is I wanted to
43. 1:45get a clean version of that flashlight.
44. 1:48I imported that scan into ChatGPT, and
45. 1:52it healed the model at first.
46. 1:54It's watertight now. There's no rough
47. 1:57edges. There's no broken surfaces. If
48. 1:59you drilled a little hole in this model
49. 2:01and poured water into it, nothing would
50. 2:03leak out. Then I said, "Hey,
51. 2:06I want you to create a clean version of
52. 2:10this." And so, here's what's on my
53. 2:12screen right now. Rebuilt as one
54. 2:15verified solid with 119 CAD faces
55. 2:19replacing roughly 234,000
56. 2:22scan triangles, includes flat planes,
57. 2:25rounded edges, recessed bezel, side
58. 2:27control and simplified
59. 2:30simplified words are hard clip geometry.
60. 2:34Open it directly in Fusion 360 as an
61. 2:36editable solid. And I want you to see
62. 2:39there's the thing that it said I was
63. 2:41going to see if I opened it in Fusion.
64. 2:43And I want you to know that when I
65. 2:45opened it in Fusion, it blew my freaky
66. 2:49freak mind.
67. 2:51Because there
68. 2:53was a clean designed solid that matched
69. 2:57the scan that I had made. And I thought,
70. 3:00"This isn't what ChatGPT is supposed to
71. 3:02do."
72. 3:03In the demo video for Astra, you could
73. 3:06make a rocket, a simple rocket, and then
74. 3:08make a simple STL file, which is the
75. 3:11file 3D printers use, and you could
76. 3:13print your rocket, and it was a cute
77. 3:15little rocket. This was a quarter
78. 3:17million triangles from a scan I had
79. 3:20imported on my desk. And the net result
80. 3:23was something that I could now build
81. 3:26with CAD. And you can see all these
82. 3:28individual facets and faces are here,
83. 3:32and the fillets are here, and they're
84. 3:34pretty much close to exactly what that
85. 3:36flashlight was.
86. 3:38Then I had another idea.
87. 3:40I said, "What if I can bypass CAD
88. 3:42altogether?
89. 3:43What if I don't want to bring it into
90. 3:45Fusion 360?" And so,
91. 3:47I had a cargo net clip that had broke.
92. 3:51And you'll see here if I zoom in,
93. 3:54there's a place right where my index
94. 3:55finger is
95. 3:57where it had cracked. And I thought, "I
96. 3:59want to make another one of these,
97. 4:01but I don't want to use Fusion 360 to do
98. 4:06it. What if I just took photographs of
99. 4:08this?
100. 4:09And maybe use my micrometer
101. 4:12to measure a couple edges and tell Chat
102. 4:15GPT
103. 4:17that I wanted to make a new version of
104. 4:19this.
105. 4:20Could it do it?
106. 4:21And
107. 4:23I kind of had a sick feeling in my
108. 4:26stomach
109. 4:27as I started to go through with the
110. 4:29prompts. I want you to make me an STL
111. 4:31file that mimics the photos I've shown
112. 4:33you as close as you possibly can. It's a
113. 4:36broken piece I glued back together.
114. 4:39I've dimensioned a few of the places. I
115. 4:41need an STL file I can print on a resin
116. 4:43printer as best you can approximate it.
117. 4:46And you'll see here that there are
118. 4:48some photos that I've uploaded and
119. 4:51they're not particularly
120. 4:53dimensioned. And I took a few things
121. 4:56like the thickness and the width and I
122. 4:58thought, this is where it's going to
123. 4:59break down.
124. 5:01But then I remembered things are
125. 5:03changing. Chat GPT remembers projects
126. 5:06that I've done. It has a memory.
127. 5:08There's a database of things. It's
128. 5:10gotten really smart really quickly.
129. 5:14And then
130. 5:15the program came back. It took it 5
131. 5:18minutes and 44 seconds
132. 5:21and it said, here's what I've got. Let's
133. 5:23do a fit test. And it brought in that
134. 5:27file.
135. 5:28Now, look.
136. 5:30Where the glue was,
137. 5:32it created
138. 5:33the crack. And then I had this piece on
139. 5:36the 3D printer.
140. 5:39>> [laughter]
141. 5:40>> Now, I'm going to put this down and
142. 5:42we'll show you the iterations of this on
143. 5:45these parts.
144. 5:47The very first version of it,
145. 5:49here's the original
146. 5:51and here's the first whack
147. 5:53with the prompts that I had given it.
148. 5:56And I want you to see side by side,
149. 5:59boy, that's pretty close considering all
150. 6:02I did was upload a photo.
151. 6:05And I knew that we were onto something,
152. 6:08but more importantly, I knew something
153. 6:09scary was happening.
154. 6:12And so, I said, "Hey,
155. 6:14there's a place where you have an
156. 6:15irregular edge where I glued the piece.
157. 6:18I want this to be clean where the net
158. 6:21pops in. There are smooth faces. I have
159. 6:23a yellow circle here to show you on my
160. 6:27picture where things have gone wrong.
161. 6:29And all I did was sketch up on a picture
162. 6:32and say, 'That's supposed to be a
163. 6:33radius,
164. 6:35and those lines are supposed to be flat
165. 6:37faces.
166. 6:38This is not hard.' I said, "Look, that's
167. 6:41what you had. You got to get rid of
168. 6:42that, and I want this.
169. 6:44I'm not in Fusion, remember? I'm not in
170. 6:47Fusion 360."
171. 6:49And then it said, "Oh,
172. 6:51you mean something like this?"
173. 6:54>> [laughter]
174. 6:57>> And then we had the third version.
175. 7:00Remember, I'm in for this about 20
176. 7:03minutes right now.
177. 7:04And I'm making this part so this guy
178. 7:08out of the picture,
179. 7:09and now look how we're getting closer.
180. 7:12And so now I have the curve. It's nice
181. 7:16and smooth.
182. 7:18And this was a very quick 3D print, but
183. 7:22if I lay them on top of each other,
184. 7:24you'll notice that it's almost one to
185. 7:26one.
186. 7:28I have not used Fusion 360 at this
187. 7:31point. No engineering skills. This is
188. 7:34something anyone could have prompted and
189. 7:36typed in.
190. 7:38And then I said, "Listen,
191. 7:40we're almost there. And hey, the
192. 7:43original piece is 60.6 mm tall by 51 mm
193. 7:48wide. The current design is bigger.
194. 7:51Here's a side-by-side, and I printed out
195. 7:542 mm
196. 7:56grid paper.
197. 7:58And you know what it was able to do?
198. 8:00Recognize the 2 mm squares,
199. 8:04and then it was also able to compare
200. 8:06what I had to the original.
201. 8:09And it was starting to tabulate the
202. 8:11splines of these curves and the radiuses
203. 8:14of these things. And it said, "Hey, I'm
204. 8:17doing it.
205. 8:18Uh
206. 8:19thank you very much.
207. 8:21I also forgot to tell you
208. 8:23before you execute the last command,
209. 8:25look at how the original doesn't taper
210. 8:27at the lower hook. This piece, if you
211. 8:31see here,
212. 8:32it's flat and it's the same width.
213. 8:35But the original piece
214. 8:37is tapered. And I said, "I want you to
215. 8:40to do that." And I gave it a
216. 8:41measurement.
217. 8:42And then it came back
218. 8:45and it said, "Hey, here's the original
219. 8:48and here's what I made." And then I
220. 8:50printed it on the resin printer.
221. 8:52Remember, we're a half an hour in. I
222. 8:54haven't used CAD. I've measured a few
223. 8:56things with a micrometer. So,
224. 8:59we went from the original to a very
225. 9:02quick draft to something with more
226. 9:07in-line dimensions that was in in line
227. 9:09and perfect with it.
228. 9:11Now, I have a near identical copy of the
229. 9:14part. And if it was black resin, you
230. 9:16would think it came in a bag with all
231. 9:18the other parts.
232. 9:20All of the important dimensions are
233. 9:23nearly indiscernible from the original.
234. 9:27And as you turn it around, I can make
235. 9:29These are sort of the support
236. 9:32uh divots from the resin printer that I
237. 9:34can sand away or I can support it
238. 9:36better. But guys,
239. 9:40when I put them on top of each other,
240. 9:42for all intents and purposes, this is
241. 9:45the same piece and I didn't use CAD to
242. 9:47do it.
243. 9:49I started with a flashlight.
244. 9:52And then I said, "Here's a mesh." I put
245. 9:54that mesh into Fusion 360. It created an
246. 9:58editable solid
247. 10:00which told me that it knew how to do
248. 10:02CAD.
249. 10:04Which meant that if I had a broken part,
250. 10:06and this is complex geometry that would
251. 10:09have taken a very long time to reverse
252. 10:11engineer and measure from the scan, I
253. 10:13skipped the scan completely and ended up
254. 10:17with a part that is identical
255. 10:20to the original.
256. 10:22If you have a friend in engineering or
257. 10:24you're in engineering, you understand
258. 10:26how big of a deal this is because in my
259. 10:28next video
260. 10:29I'm going to show you how I can design a
261. 10:31prompt
262. 10:33and bring in a scan
263. 10:35and tie chat GPT directly
264. 10:39to Fusion 360
265. 10:41and build multi-part models that are
266. 10:44constrained and move. I could take this
267. 10:47scan, I could tell it to make a special
268. 10:49holster
269. 10:50and give it a rendering from a picture
270. 10:52that it drew for me.
271. 10:54I can make containers, I can My head is
272. 10:57exploding and I don't have to use this
273. 11:01program anymore.
274. 11:06And if you're still in the engineering
275. 11:07world, you should get into this today
276. 11:11because if you're not using this and if
277. 11:13you're not using these models to send
278. 11:15prompts to the programs and
279. 11:17understanding the interface
280. 11:19you're kind of that green mile dead man
281. 11:23walking.
282. 11:24I am excited by this. I'm also kind of
283. 11:27scared to death
284. 11:29because this is a highly specialized
285. 11:31industry
286. 11:32and to go from a hook
287. 11:34to a finished model in 30-40 minutes and
288. 11:38print as many of them as I want is
289. 11:41putting the entire engineering industry
290. 11:43on notice.
291. 11:44You've been warned.
292. 11:46Hey, it's me, Michael. Don't forget to
293. 11:48subscribe and follow. When I do this
294. 11:50next project, you're going to really
295. 11:52want to see what the outcome is
296. 11:54considering the army of 3D printers I
297. 11:56have in there, the accuracy of the
298. 11:58scanners I have behind me, and the
299. 12:00project that I want to complete which is
300. 12:02going to blow your mind. Take care,
301. 12:04guys, and thanks again.
302. 12:07>> [music]
303. 12:17>> Mhm.