28BYJ-48 Stepper Shaft - z-axis Coupler

This is the z-axis coupler for a 28BYJ-48 Stepper Shaft and a 5mm threaded rod. This is a remix of the Smartrap - Z axis Motor coupler by Nutz95. I added blocks to one side because the shaft of the 28BYJ-48 Stepper is notched. This provides a better grip on the stepper shaft. You will need M3 Nuts and Bolts in order to fix them together...or the #4-40 x 1/2" - like in the photo I've provided. I made these on/for the Cherry 3D printer found here: http://www.instructables.com/id/Cherry-60-3D-Pri