Prusa PLA Z Coupling Revisited
thingiverse
This connection suits a 5mm motor shaft and an 8mm threaded rod devoid of any hose. The revised design is taller, enhancing grip space on both components for a snug fit. Top and bottom tapering prevent rubbing against the Z motor mount's inside. Enjoy it! To assemble, print the part, clean the shaft with alcohol, then screw everything together. Ensure the rod top and shaft bottom are touching or near-touching when tightening the coupling; optimally close together. Opt for 20mm bolts over used 25mm ones for a better fit.
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