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    Nozzle rams into bed when not near center

    Scheduled Pinned Locked Moved Solved
    Tuning and tweaking
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    • Vetiundefined
      Veti
      last edited by

      the picture please

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      • deltwalrusundefined
        deltwalrus
        last edited by

        Sorry about that.

        Screen Shot 2021-01-21 at 10.03.42 AM.png

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        • Vetiundefined
          Veti
          last edited by

          did you use M500 to save the calibration or did you put the values in config.g?

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          • deltwalrusundefined
            deltwalrus
            last edited by

            I did not run an M500 immediately after running the mesh grid compensation, no. I wasn't aware that was necessary, I figured it stored that information automatically after it ran. Thanks for the tip on that.

            I will run another auto-calibration, then another mesh bed compensation routine, then I will run an M500 and try the print again.

            As a side note, is there ever an instance where you would not want to store the results of a calibration or mesh bed routine? Shouldn't that be done automatically (in a macro maybe)?

            Phaedruxundefined Vetiundefined 2 Replies Last reply Reply Quote 0
            • deltwalrusundefined
              deltwalrus
              last edited by

              No change in behaviour after running calibration, G29, M500, then starting print. Nozzle hits the bed near the "top left" part of the print, starts to actually rotate the glass bed with it, and even managed to dislodge one of the magnetic arms from the ball before the emergency stop halted the motion and reset the board.

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              • deltwalrusundefined
                deltwalrus
                last edited by

                This post is deleted!
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                • Phaedruxundefined
                  Phaedrux Moderator @deltwalrus
                  last edited by

                  @deltwalrus said in Nozzle rams into bed when not near center:

                  I figured it stored that information automatically after it ran.

                  It does, but only while the printer is powered on. The values are lost after a power cycle unless they are either saved to config-override.g with M500 and adding M501 to the end of config.g to load it. Or manually copying the resulting calibration command into config.g

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • Vetiundefined
                    Veti @deltwalrus
                    last edited by

                    @deltwalrus said in Nozzle rams into bed when not near center:

                    I did not run an M500 immediately after running the mesh grid compensation, no. I wasn't aware that was necessary, I figured it stored that information automatically after it ran. Thanks for the tip on that.

                    G32 not G29.

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                    • deltwalrusundefined
                      deltwalrus
                      last edited by

                      I just got the new mirrors today, will test them for thermal suitability then give the problematic print another go.

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                      • deltwalrusundefined
                        deltwalrus
                        last edited by

                        It appears either my old glass plate was warped, or in the process of removing it and installing the mirror I fixed this issue, because a larger print is going right now and the bed ramming seems to be resolved.

                        Go figure.

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