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    How to apply simple offset to nozzle on a delta printer?

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    • burtoogleundefined
      burtoogle
      last edited by

      Hi, I just noticed that on one of my delta printers, location 0,0 isn't in the centre of the bed, it's a few mm off in X. I tried to work out which gcode to use to offset the nozzle but got confused. So the question is, what's the simplest way to offset the print on the bed?

      Thanks.

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      • jmjcokeundefined
        jmjcoke
        last edited by

        X Y nozzle offset in slicer is easy. Are you using auto calibration? I would think the endstop correction would make your effector be in the middle of the machine geometry. Could the bed have slight misalignment in X?

        Joshua Coke

        Trick Laser Metal Max with Smart Effector
        Duet Wifi
        Zesty Nimble
        Mosaic Pallette+
        At work
        Renishaw AM250/400/ RenAM500M/500Q Powder Bed Fusion (Metal 3D Printers)

        burtoogleundefined 1 Reply Last reply Reply Quote 0
        • burtoogleundefined
          burtoogle @jmjcoke
          last edited by

          @jmjcoke , thanks for the reply. I realise I could offset the print in the slicer but I would prefer to get the printer to print where I expect it to. I have been using the printer for years quite happily so I don't know where the offset is creeping in. I have measured the centre line on the bed and it is exactly half way between the towers but the printer thinks the x = 0 position is about 3mm to the left of that centre line. Weird.

          jmjcokeundefined 1 Reply Last reply Reply Quote 0
          • jmjcokeundefined
            jmjcoke
            last edited by jmjcoke

            you could add a
            g1 x3( could be -3 depending on which way it is off)
            g92 x0 to the end of your home file.

            Joshua Coke

            Trick Laser Metal Max with Smart Effector
            Duet Wifi
            Zesty Nimble
            Mosaic Pallette+
            At work
            Renishaw AM250/400/ RenAM500M/500Q Powder Bed Fusion (Metal 3D Printers)

            dc42undefined 1 Reply Last reply Reply Quote 0
            • jmjcokeundefined
              jmjcoke @burtoogle
              last edited by

              @burtoogle Look at this also.

              https://reprap.org/wiki/G-code#M206:_Offset_axes

              Joshua Coke

              Trick Laser Metal Max with Smart Effector
              Duet Wifi
              Zesty Nimble
              Mosaic Pallette+
              At work
              Renishaw AM250/400/ RenAM500M/500Q Powder Bed Fusion (Metal 3D Printers)

              burtoogleundefined 1 Reply Last reply Reply Quote 0
              • burtoogleundefined
                burtoogle @jmjcoke
                last edited by

                @jmjcoke said in How to apply simple offset to nozzle on a delta printer?:

                @burtoogle Look at this also.

                https://reprap.org/wiki/G-code#M206:_Offset_axes

                Thanks for the suggestions. Does that M206 work with delta printers? Is the offset applied to the tool position or the carriage positions?

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                • dc42undefined
                  dc42 administrators @jmjcoke
                  last edited by

                  @jmjcoke said in How to apply simple offset to nozzle on a delta printer?:

                  you could add a
                  g1 x3( could be -3 depending on which way it is off)
                  g92 x0 to the end of your home file.

                  That won't work on a delta, it will mess up the geometry.

                  RRF defines bed centre as the point that is equidistant from the 3 towers. But if the towers are not perpendicular to the bed then this won't be accurate.

                  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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