Orange black light sensitive glow in the dark potentiometer knobs.

Black light sensitive glow in the dark potentiometer knobs.

One 3D printed glow in the dark PLA knob for a potentiometer. Black indicator. Outside diameter ½” height 0.6”, ¼” socket diameter, 0.525” socket depth. Fixed in place with a set screw that takes a 1/16” hex wench. Compatible with ¼” and 6mm shaft potentiometers.  Compatible with straight, knurled, and D shaft potentiometers.

Green is the brightest. Orange has a red hue to it under normal lighting. Blue has the weakest glow, still a good effect under black light.