28BYJ-48 5mm Z Coupling for M3

thingiverse

This part pairs a 5mm motor shaft of a 28BYJ-48 stepper motor directly with a 5mm threaded rod. In search of a precise motor coupling for the Cherry 60€ 3D printer, I found nothing suitable for M3 screws, despite some designs claiming to be designed specifically for this purpose. The OpenSCAD file has been tweaked somewhat, but it remains usable for those familiar with its intricacies. Credit goes to nophead and others who have contributed to the design in the past. This coupling was printed successfully using PETG, though it should also work effectively with PLA or ABS materials.