Shapeoko Y axis seem to be dragging

Help! I can’t seem to get my Shapeoko XXL Pro to cut a round circle. The Y axis is not smooth when moving and I’m getting an oval circle and not so square, square. I watched Winston’s Office Hours #13 and cleaned all the belts and pulleys. In addition, I believe all of my belts are tight as he instructed. I can’t figure out by my results of a circle and square are so off. Any input would be greatful.

Have you checked the set screws on the pulleys? Both tight, one over the flat of the motor shaft.


See answer at:

To check your pulleys easily.



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