RF-30 Spindle Quick Change Knob
thingiverse
Once I started using my basic draw nut wrench along with spectre03cobra's spindle wrench, I immediately thought there must be an easier way to do this. Why go through the 5 seconds worth of effort to flip open the top when there's that hole already available? My next thought was "I'm definitely going to get distracted and leave a wrench connected to the draw nut sticking out of the cover, turn the mill on, and accidentally cause serious harm"...so, I created this nested round knob which does the same job with much lower likelihood of injury if left on the spindle/nut and turned on.
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