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    Layer Shifting at Same or Similar Spot on Same Print

    Scheduled Pinned Locked Moved
    Tuning and tweaking
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    • saffiundefined
      saffi
      last edited by

      I've mostly been tweaking the retraction settings and temperature before the layer shifting occured.

      Could a layer shift be caused by the hot end temporarily jamming with filament and then the printer hitting the blob it creates and then shifting?

      I just started having this problem and it's always near the same layer, leading me to think it's a print setting that needs changing.

      Anyone experience something similar?

      I've upped the temperature and lowered the retraction length, so we'll see if it keeps doing it. So far it's about three prints out of fifteen.

      Prusa i3 Style Printer with Duet WiFi, E3D Volcano, Bondtech BMG

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      • number40fanundefined
        number40fan
        last edited by

        How big of a shift are you talking about? Enough to move a loose hot bed or enough where you might be missing steps on and axis?

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        • dc42undefined
          dc42 administrators
          last edited by

          Also use M122 to check the step error count after the layer shift occurs, in case of a firmware bug.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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          • saffiundefined
            saffi
            last edited by

            @number40fan:

            How big of a shift are you talking about? Enough to move a loose hot bed or enough where you might be missing steps on and axis?

            Usually the last twenty layers or so is shifted to where I can peel the shifted piece off of the print easily. So it maybe shifts upward in the Z direction and then over in the Y direction? It only happens on a specific print I am doing, so I'll updated if it keeps repeating. I'll tweak slicer settings to see if perhaps it's some sort of odd bug that comes up and check M122.

            Prusa i3 Style Printer with Duet WiFi, E3D Volcano, Bondtech BMG

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            • dc42undefined
              dc42 administrators
              last edited by

              It might also be worth increasing the tower stepper motor currents if they are currently running well below their rated current.

              Duet WiFi hardware designer and firmware engineer
              Please do not ask me for Duet support via PM or email, use the forum
              http://www.escher3d.com, https://miscsolutions.wordpress.com

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