Wobble in Y axis, probably ball nut wear?


Why do I have this wobble in the right y axis rail?
The left one is affected too.
I was wondering why my carves look so mushy.

I’m having what looks like a similar problem. Is there a lot of play in the ball screw? Can you easily turn it with your fingers?

Yes, it is the ball nut.
I just disassembled it and gave it a clean.
After assembly I still have the wobble.
Looks like a good 0.3mm on the right and 0.2 on the left. The X axis is tight.

I will order two new ball nuts and see if that helps.

Anyone else had to replace them?