It is made on laser engraver. I have a friend that work on this machine and I make a corel with outlines and what need to be on scale.
it is made from black PVC foil past on Plexiglass.
First cut the foil on low power to remove the foil only and after this cut outline on big power.
I'm not sure which one will illuminate better, but will test all 3 before to choose one. Think this one with black foil back will be better then other because will illuminate only the scale on top of the LED.
I hope in next week to find a time to go to make the knob and will make some pictures with all installed.
