Put your extra neodymium magnets to good use with these magnet nozzle indicator caps. Never again will you forget which nozzle is loaded. Keep track with this easy solution that satisfyingly clicks into the back of the extruder motor.
They were made on and for a MK3S+ but I assume all the motors have the same size hole in the back plate.
I printed these with 0.4 mm nozzle with 0.2 layer height; 15% fill
The author hasn't provided the model origin yet.