Helical drive coupling
thingiverse
To connect my stepper motor to ACME rod, I considered printing a helical coupling as an additional feature. Surprisingly, the print exceeded expectations; however, I can't vouch for its performance or durability. Unfortunately, this design wasn't created in OpenSCAD, so I've also shared my Alibre Design 2011 part. If you require a specific motor shaft or rod diameter, please let me know and I'll upload the suitable file accordingly.
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