CNC Coupling Nut

February 11, 2015 · Posted in Engineering, Woodwork 

During cutting of the handles for the bee boxes I had the issue of the z-axis coupling nut slipping.  This destroyed one of the sides, as the CNC stopped raising the tool, it ended up cutting all the way through the box.  In order to fix this I made my own coupling nut by tapping a 1″ nylon bushing for the threaded rod, and pushing it onto the stepper motor.  I have had no issues since I did this. I will try replacing the other two as well. Perhaps I can increase the speed of the movements. This would greatly reduce the necessary cutting time.


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