Knob for tr8 flexible coupler
thingiverse
I like to fine tune the Z height when the print is starting but my Anet ET4 doesn't allow me to do that, so I designed this to be able to adjust Z axis precisely without the knob unscrewing from the tr8 lead screw. You will need one TR8 flexible coupler (19mm external diameter) to mount this knob on your printer. I designed this for the Anet ET4 but it works for any 3D printer with a TR8 lead screw Z axis.
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