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Build Your Own SLA/SLS • Piezo ultrasonic release
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Piezo ultrasonic release

Posted: Tue May 24, 2016 12:28 pm
by lasersafe1
Haven't really read enough to know if this has been tried yet, but I see that the community is looking for better ways to make sure the print does not stick to the bottom window. Has anybody considered mounting the vat on piezo elements to which you could apply a high voltage high frequency signal to vibrate it at ultrasonic speeds? At first I thought it could be mounted to the build plate, but I suspect that would cause the main assembly to release.

John

Re: Piezo ultrasonic release

Posted: Tue May 24, 2016 2:55 pm
by dragokirov
I tried but without any success. The problem is in the vacuum, not in the sticking. In theory this works but not in practice.
Drago

Re: Piezo ultrasonic release

Posted: Thu May 26, 2016 1:16 pm
by lasersafe1
Thanks drag0kirov,
So it appears that the mUVe 3D design tips the build plate to release during retract, but others tilt the resin bath. Is there an advantage of one over the other? I recall someone writing about keeping the resin undisturbed, but I don't understand why, since apparently you need to mix it so colors don't settle out in some of the resin formulas. I just got some Makerjuice G+ in the mail to play with, but right now I only have a UV flashlight and some parts on order. (and my DLP projector I got of Craigslist for $40)