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A comment on 600 Watt, 3d-printed, Halbach Array, Brushless DC Electric Motor [video]. Parent comment

Re:600 Watt, 3d-printed, Halbach Array, Brushless DC Electri... by Animats on Friday May 12, 2017 @04:01AM (#14322189)
Look at him screwing on the end bell of the motor at 222 seconds in. [1] That's a big diameter thread, and the close-ups of it show a very clean thread. You can see the marks of the 3D printing layers on the outer motor casing, but not on the thread. I suspect that thread was turned on a lathe.

[1] https://youtu.be/NFvMC3l3fGY?t=222

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Re:600 Watt, 3d-printed, Halbach Array, Brushless DC Electri... by Aser on Friday May 12, 2017 @06:48AM (#14322842)
I've printed finer threads on my cheap 3D printer, although it took a few tries to get them the right size.

It's possible that he used acetone vapour to smooth out the surface of the threads.

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