Yet Another Prusa Mendel Z Coupling
thingiverse
Join a 5mm motor shaft to an 8mm threaded rod, maintaining coaxiality while allowing for slight angular adjustments if the rod is bent. Refer to http://hydraraptor.blogspot.com/2011/06/yet-another-prusa-z-coupling.html for further details. Slip plastic tubing onto the motor shaft before securing it with M3x20 bolts, ensuring no grease residue remains on the shaft by wiping it down with alcohol.
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