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    Accurate dimensions

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    • donpedroundefined
      donpedro
      last edited by

      My delta printer does not print in the accurate dimensions, they differ on x and y and are different if the part has different lengths
      How can I correct?

      GuruSMIundefined 1 Reply Last reply Reply Quote 0
      • GuruSMIundefined
        GuruSMI @donpedro
        last edited by

        @donpedro
        https://duet3d.dozuki.com/Wiki/Calibrating_a_delta_printer#Section_Correcting_for_small_X_and_Y_scaling_errors

        donpedroundefined 1 Reply Last reply Reply Quote 0
        • donpedroundefined
          donpedro @GuruSMI
          last edited by

          I don't think it helps me because this difference is not constant, I could adjust it from the slicer if it was like that, but it doesn't work
          I have for example the following values on one axis, as the others differ
          24.68
          19.78
          14.82
          9.95
          5.06
          print_measure (3).stl

          dc42undefined 1 Reply Last reply Reply Quote 0
          • jay_s_ukundefined
            jay_s_uk
            last edited by

            @donpedro are your arm measurements accurate?

            Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

            donpedroundefined 1 Reply Last reply Reply Quote 0
            • donpedroundefined
              donpedro @jay_s_uk
              last edited by

              there are 3 pairs of arms with different values and they are also in config g

              1 Reply Last reply Reply Quote 0
              • dc42undefined
                dc42 administrators @donpedro
                last edited by

                @donpedro said in Accurate dimensions:

                I don't think it helps me because this difference is not constant, I could adjust it from the slicer if it was like that, but it doesn't work
                I have for example the following values on one axis, as the others differ
                24.68
                19.78
                14.82
                9.95
                5.06

                It looks to me that you have a scaling error of -2% plus an excess extrusion width of 0.75mm on each side. That would give actual sizes of 24.65, 19.75, 14.85, 9.95 and 5.05 which are very close to what you measured.

                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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