Linear Stepper Robo3D Adapter
thingiverse
Made specifically for the Robo3D to interface with this stepper motor.. http://www.omc-stepperonline.com/threaded-nema-17-external-linear-stepper-48mm-body-300mm-lead-screw-t635mm-2mmrev-p-225.html Instructions If you have the auto-leveling system, you'll want to print the coupling sized hex thing so you can mount the switches. I would recommend that in either case, you glue the hex into the ring. It's not entirely necessary but it may reduce the possibility of issues later.
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