Top-Down SLA Printer

[ABearden]

I thought we might be able to use on of the projectors at the space, but apparently that model splits the light three ways and passes through three separate LCDs before rejoining them. I think that might lead to far too much UV power loss. So I ordered a used DLP projector, which just got here. Arduino UNO, GRBL shield, and stepper drivers are on the way.

For now, the plan is to get the projector and Arduino working in unison. Once that's achieved, I'll acquire and figure out the bearings, screw drive, frame, and vat. I'll probably aim for a salt water float to reduce resin requirements.

Step one is to pull the projector apart and remove things that block UV. Namely, filters and the color wheel. Once that's complete, I get to reposition the lens to change the throw. The used projector I found has a throw of 5+ feet. For the projector I need to bring that down to about 8". Optionally, I may need to bypass the ballast and replace the lamp with UV LEDs. May do that eventually just for the performance, but we'll see.

To that end, anyone know if there's a small torx set in the toolbox? I don't have anything handy in the 2mm range.