Stepcraft y-upgrade pin stopper
thingiverse
This small component secures the rotation pins in position for the y-axis upgrade on a Stepcraft D series CNC machine. I experienced one of the pins detaching itself due to failed adhesive, and although there are two pins transmitting rotational force from the motor to the shaft, losing any of them can cause problems. The print securely fastens into a secondary screw hole for the brass axle mount. This means you'll need an M4 5.75 mm (metric) or 1/8" x 1/4" length (imperial) bolt to attach it to the axle mount.
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