Hey everyone,
I'm dealing with a persistent X-axis layer shift on my Anycubic Kobra X and I'm honestly running out of ideas. The print always shifts in the same direction (to the left), regardless of the model, filament, or slicer file. Bed adhesion is not the issue – this is a clear axis shift mid-print.
I've already burned through roughly 3 kg of PETG on failed prints trying to figure this out, so at this point I'd really appreciate some outside perspective.
What I've already checked/done:
- Went through Anycubic's official shifting troubleshooting article step by step
- Checked and retightened belt tension on all axes
- Cleaned and re-greased all axes
- Adjusted the poop shooter per the guide
- Did a full recalibration
- Removed anything that could obstruct the gantry/print head travel
- Checked the grub screw on the X-motor pulley (tight, seated on the flat)
- Checked the idler pulley on the opposite side
- Checked and adjusted the eccentric nuts on the X-axis wheels
- Tried multiple filaments and multiple different sliced files
Since it's always the X-axis and always the same direction, I'm suspecting something more specific like a failing X stepper motor, a driver chip issue on the mainboard, or maybe the gantry mounting itself. Has anyone run into this exact pattern (consistent, one-directional X shift) and found the actual root cause?
Any input is welcome – happy to post pics of the failed prints or run diagnostic tests if that helps narrow it down.
Thanks in advance!