Nice work, that’s looking good. I don’t have any real experience with SLA printers, @jameslancaster is the only person I can think of that has built/owns one.
Here are a couple random things that popped into my head that you’ve probably already thought of:
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UV LED size versus LCD screen size:
- I assume you’d want a pretty even distribution of light across the screen. It looks like you are using a single high power LED. Will there be any kind of diffuser used? Seem like that set up may run the risk of having a hot spot in the middle. Is over-curing an issue?
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Mechanical vs. inductive limits:
- Decent quality mechanical switches are usually perfectly fine for 3D printers. They do eventually wear out, but it takes a very long time under normal use in clean conditions as long as excessive force is not applied to them. With an SLA printer I would take into consideration the chance that the resin would get spilled on them, especially if they are placed in the bottom of the printer. In that case an inductive or hall effect sensor would be much less susceptible to liquid damage.
Definitely keep us updated, I love seeing the things other people are building.
Oh, and I totally understand how frustrating CAD software crashes can be. That stress ball is a very important piece of equipment. 