Extruder knob that can ACTUALLY be tightened - small version

thingiverse

I designed this knob because I couldn't find an extruder knob which could be decently tightened around the stepper motor shaft. Most designs feature a hole in the plastic, which in my experience does not do the job. Therefore this design, featuring a metal nut in the plastic knob. It works. This particular model knob is designed for direct-drive setups with very little space around the extruder. I will post other, bigger, knobs later. Requires an M4 nut and (short) M4 screw for tightening.