Yeah, it's called a pattern. But has limitations and really needs to be machined for any sort of accuracy. ABS is a no brainer for 3D printing now. I would like to find someone that has one that can prototype a long narrow ABS base and Red Lens for me. Most of the ones i've seen can only make something about 1ft cube. I need 2 ft long.
Would like to re-maike the reflector between the tail lights on my GTS lighted. There is a Electro Luminesent Mylar now that is thin enough to light it, but I can get the ABS base and plastic lens apart to backlight the lens. ABS Glue pretty much welds them together. Think it would be cool for the tail lights to go all the way across the back of the car with the PORSCHE in the reflector not lit.