Can I cut down an iPad screen protector and stick it over the top of my Elegoo Saturn to protect the LCD from scratches or resin leaks\drips?
Or will this harm printing?
A resin printer has an LCD screen underneath the resin tank. It shines a light up through the tank (which has a transparent bottom), which cures a thin layer of resin. The built plate then moves up slightly allowing more liquid resin to flow in underneath. The process then repeats.
There are particular wavelengths that must be allowed through. It's 405 nm (at least that's what is written on the side of the resin bottles that I use), which is UV light.