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I've added a G29 command in my starting script to do bed leveling process before every print. It works fine and compensates my bed during prints. But when I print larger models, they're all skewed in both XZ and YZ plane. So I decided to use Marlin's Skew Correction option.

I printed Calibration Squares and entered measurements for XZ and YZ plane. I left XY corrections as default (Because I have no problem in this plane). Unfortunately it sounds like Bed-Leveling and Skew-Correction don't get along! Many different problems happen!!!

  • I get "Probing failed" error.
  • Z-axis doesn't move (moves for compensating but not for new layer)
  • Bed-Leveling process fails sometimes.
  • bed center (X=0,Y=0) gets shifted...

Is there a bug in Marlin? Or I have to find another way to correct my XZ and YZ skew-ness ?!?

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    $\begingroup$ It's probably best to notify the developers and open a bug report to report your findings. Do note that a print, made on an unlevelled bed, levels out in the first 10 layers or after about one cm. A cube printed on an uneven bed is therefore never perfectly square. $\endgroup$ – 0scar May 21 '19 at 21:28
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    $\begingroup$ I'm voting to close this question as off-topic because this should be answered by the developers after a bug report has been submitted. Otherwise it would be speculation on the implementation and the solution. $\endgroup$ – 0scar Jun 28 '19 at 11:50
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    $\begingroup$ OK, I haven't got any response to my report... close it. It's Allright. $\endgroup$ – 2012User Jun 28 '19 at 12:34
  • $\begingroup$ You can always reopen it and answer it once you have gotten a response. Note that closing a question is not bad, it prevents the system to pop-up the question once in a while. Re-opening will be possible by community re-open or moderator intervention. Thanks for your understanding! $\endgroup$ – 0scar Jun 28 '19 at 12:38
  • $\begingroup$ OK, that's great. thank you. $\endgroup$ – 2012User Jun 28 '19 at 12:54

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