1/8” Shaft blue black light sensitive glow in the dark potentiometer knobs.

1/8” Shaft black light sensitive glow in the dark potentiometer knobs.

One 3D printed glow in the dark PLA knob for a potentiometer. Blue with black indicator. Outside diameter 0.42” height 0.45”, 1/8” socket diameter, 0.4” socket depth. Fixed in place with a set screw that takes a 1/16” hex wench. Compatible with 1/8” and 3mm 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.