About this 3D model

Ever wanted to manually move your reprap Z-axis easily without turning the whole thing over? Well have I got the product for you! This handy little thing slips over the back end of a NEMA17 motor shaft and clamps on tight by means of an M3 bolt and captive nut. Edit: Now includes an IGS file, for extra compatibility. I encourage everyone to use transferrable formats like IGES and STEP.