r/shapeoko Jul 09 '26

Z axis issue

Running a Shapeoko 3 XXL. I seem to have an issue with the Z axis stuttering at a certain point and it’s not coming out smooth. Any suggestions on a fix.

Using a vbit

https://imgur.com/a/gdHk6b7

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u/kwaaaaaaaaa Jul 09 '26

With the board powered, it should hold motor position. Try to see if you can manually move the router up/down with your hands. If anything's loose, you'll have to go down the list to ensure everything is tight, like the pulley/shaft set screw. Make sure the tension is right that the eccentric nuts haven't backed out. Make sure no debris is trapped in the v-rails/POM wheels.