Chuck Rotary adjuster key (knob type)

thingiverse

I made a mostly printed chuck type rotary attachment for my laser engraver. The chuck uses 3 jaws adjusted with a key (similar to these https://www.thingiverse.com/thing:624625/remixes). The original plans have a standard T-handle style chuck key, which works, but doesn't have a solid feel to the hand. I've remixed the keys with a knob rather than a T handle. These should work with any of the chuck models available here that use the hex key drive gear adjusters. These are sized to fit the one I made for my machine, but may need to be scaled slightly one way or the other to fit yours. Pics of prints will follow after I print them.