Quote Originally Posted by magicniner View Post
Check your stepper to shaft coupling isn't slipping, and that the end float control bearing isn't moving, the best way is disassembly and reassembly as "Looking OK" has often proven misleading to others in the past
I was thinking this. I did partially strip yesterday to clean the bed, I checked all bolts while they were exposed. I will pull gantry covers off and check all those too.

It's all ballscrew is it wise to lube the screws and runners?

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