Shapeoko Y axis seem to be dragging

[Renobulldogman (Randy Rohrback)]

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.

[mhotchin (Michael Hotchin)]

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

[WillAdams (William Adams (Carbide 3D))]

See answer at:

Y axis is jerky when cutting

What sort of toolpath are you cutting? If your machine is mechanically sound (pulleys secure, belts well-tensioned, linear rails lubricated), check the wiring. You can verify the electronics by powering down, removing both Y-axis belts (label them so that you can swap them side-for-side and end-for-end), and putting a bit of tape on the pulleys. Then, power up and connect to the machine and try to initialize — the ma machine will home Z and X as normal, while the Y-axis should turn until it t…

[Zman (MICHAEL ZEMANEK)]

To check your pulleys easily.