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I've been having a problem lately with some minor layer shifting with my Ender 3. It just started recently and I've made no changes to the printer since it was working fine. The layer shifting is always on the x-axis and its not a large amount. Just enough to render my prints useless. The shift can happen in either direction on the x-axis. See attached photo.

Things I've tried:

1 Retensioning the belts

2 Printing at slower speeds

3 Checking all bed connections to make sure the bed is solid

4 Reducing the jerk setting

5 Activating Z-hop

6 Reducing acceleration

7 Increased retraction.

The problem occurs on multiple STL files that used to work fine

Any help would be appreciated

enter image description here

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  • $\begingroup$ Did you reslize the model? $\endgroup$ – Trish Jun 9 at 11:12
  • $\begingroup$ In the case of the model I show in the photo, I resized the top to stretch it a little taller. In other models that are showing the same layer shifting, I did not resize, $\endgroup$ – Daknife Jun 9 at 15:11
  • $\begingroup$ not resize, RE-sliced. As in, did you print old G-code or freshly sliced one? $\endgroup$ – Trish Jun 9 at 15:12
  • $\begingroup$ I've run prints with gcode files that predate this problem and the same shifting occurs. I even went so far as to uninstall Cura 4.5 and reinstall 4.1 and still get the layer shifts $\endgroup$ – Daknife Jun 9 at 23:07
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OK I found the answer. I removed the extruder cover and found that the 2 screws attaching the extruder assembly were loose. A very simple fix to a very irritating problem.

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    $\begingroup$ Thanks for getting back to answer your question! $\endgroup$ – 0scar Jun 10 at 5:50
  • $\begingroup$ I was about to suggest checking the belt tensioner or printhead wheels for misalignment, but yes, a loose hotend is the perfectly reasonable reason for this behavior of G-code suddenly not working anymore. You can accept your self-answer tomorrow if I am not totally mistaken. $\endgroup$ – Trish Jun 11 at 16:11

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