A simple yet efficient Z coupler !
It works with 10mm M3 bolts & nuts.
There are 2 couplers :
- One is designed for 5mm motor shaft / 8 mm ACME rod : Z-axis-coupler-5x8.stl.
- One is designed for 5mm motor shaft / 6.4 mm ACME rod : Z-axis-coupler-5x6.4.stl. This coupler is ment for Printrbot Simple & Simple Metal printers but work perfectly fine with other printers with 6.4 mm ACME rod.
- One is designed for 5mm motor shaft / 5 mm ACME rod : Z-axis-coupler-5x5.stl.
[Update 03/09/15] : fixed the screw axis closer to the body for a stronger grip on motor shaft & Acme rod (all versions).
- straight up, motor shaft hole at the bottom
- 2 outside perimeters
- 30%infill (more flexible) to 50% infill (more rigid)