Prusa MMU2 Pulley Stepper Motor Knob

thingiverse

I created this two-piece knob/thumb wheel to easily rotate the pulley stepper motor with my fingers as I clean the hobbed filament pulleys/drive gears from shredded filament bits using a needle or toothbrush. It functions perfectly. To assemble it, you'll need (2) 3mm x 10 screws and (2) 3mm square nuts that should be included in your Prusa spares bag. This design prints with no raft or supports required. Postscript: I've been informed that this design may not work with the MMU1 to MMU2 upgrade due to a metal coupling in this area. The Fusion360 model is included for easy modification and use.