I may have given the wrong impression. The sign letters are laser cut out of laser board with an adhesion backing. They're not 3D printed, but you're making me think that it could be. Interesting...
Alan, the Elegoo is an LCD Mask system that shines UV light through a hi-res LCD screen capturing the image of each layer in either opaque black or clear letting the light through to expose. Regardless, different resins will require different exposure times and possibly thickness adjustments. I'm going to check with the manufacturer about using different resins with differing properties. I know Elegoo sells a whole line of different colors. I'm sticking with the transparent for now, but am intrigued by the thought of mixing some more flexible material in to reduce brittleness.
My ultrasonic cleaner is arriving any day now. The Simple Green detergent already came. In addition to cleaning 3D parts, I'm anxious to try it on cleaning air brush parts. Has anyone got any experience using an ultrasonic cleaner on air brushes? I especially like the thought that it will clean internal passages where physical methods can't reach. I've already gotten several conflicting opinions on using this tool for 3D resin parts cleaning. Some use it after Isopropyl Alcohol (IPA) dip, others don't use the alcohol at all. I'm going to use the IPA first to remove the bulk of the uncured resin and use the Ultrasonic to clean off what's left.
