Since I can’t lasercut button cap, these buttons have removeable cap, so I think it is possible to place a transparent film under it with printed symbol. Not beautiful, but should be OK. Anyone tried these?
Description: Icecube is a creative combination of a light pipe and a switch. It’s basically a clear button that you can light up to be any color! The plastic allows any light source to be routed into the clear plastic. The Icecube then clips to the head of a regular momentary switch.