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    Maybe slicer related? - g28 and g29 work from console, not from print.

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    • archindividualundefined
      archindividual
      last edited by

      So I'm about 90% certain that this is a slicing problem.

      If I'm in the web interface and send a g28, everything is perfect. Goes right to the front left corner drops until Z triggers. If I follow that up with a g29, it proceeds to probe the entire bed, no issues there.

      Now, if I pull up simplify3d and slice a model (In this case a 20x20mm cube, it homes X and Y and starts dropping the Z without moving first to the tool offset of x45,y15 so it attempts to drop into empty space.

      So I attempted to see if the g29 would happen after that point by artificially triggering the Z probe (Holding a metal ruler under it flat against the bed but sticking out enough to trigger the probe) the probe stops at that level, rolls over to the first probe point, then throws a "Error: Z probe was not triggered during probing move" and attempts to just shoot over and start printing willy nilly.

      This has to be a slicer issue right? I mean sending the codes manually in sequence acts exactly like it's supposed to.

      This happens both in Slic3r and Simplify3d.

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      • 3dprinting meatheadundefined
        3dprinting meathead
        last edited by

        slic3r has start g codes, gotta make sure G29 is in there after G28. In slic3r, it's under printer, custom g code.

        Not all printers have auto leveling so by default, it doesn't include it in start g code.

        You can also enter G29 S1 to make it load your saved height map without probing again, this would come after the G28 as well

        If I can learn it, than anyone can learn it.

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        • archindividualundefined
          archindividual
          last edited by

          @3dprinting:

          slic3r has start g codes, gotta make sure G29 is in there after G28. In slic3r, it's under printer, custom g code.

          Not all printers have auto leveling so by default, it doesn't include it in start g code.

          You can also enter G29 S1 to make it load your saved height map without probing again, this would come after the G28 as well

          Yeah in both Slic3r and S3d I have this as the start code -

          G28; Home all axes
          G29; Start ABL
          G92 Z0; ABL offset in mm (This isn't set yet)

          But when a print starts the g28 homes x and y and then goes straight down without the tool offset. It's completely weird.

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          • 3dprinting meatheadundefined
            3dprinting meathead
            last edited by

            can you program the z offset in config.g? That's what I do. I've never used the g92 zo. or is that because you have multiple tools? that also wouldn't make sense, because if they were at different z heights, one would crash while using the other.

            If I can learn it, than anyone can learn it.

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            • archindividualundefined
              archindividual
              last edited by

              @3dprinting:

              can you program the z offset in config.g? That's what I do. I've never used the g92 zo. or is that because you have multiple tools? that also wouldn't make sense, because if they were at different z heights, one would crash while using the other.

              Well I was using that for first layer adjustment. Just fast. But that happens after the g28, which is the command that is failing to play out correctly when attempting to print, and starting the snowball so to speak.

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              • dc42undefined
                dc42 administrators
                last edited by

                You should not be sending G92 Z0 after G29.

                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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