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    mesh bed compensation not applying correct corrections

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    • necroratundefined
      necrorat @Veti
      last edited by

      @Veti just ran though a 3x3 grid to check and i am consistently getting 2.31 for the trigger height

      01/02/2020, 15:16:27 M98 P"0:/macros/probe test"
      Current reading 0, threshold 25, trigger height 2.31, offsets X-29.5 Y11.4

      Vetiundefined 1 Reply Last reply Reply Quote 0
      • Vetiundefined
        Veti @necrorat
        last edited by Veti

        @necrorat said in mesh bed compensation not applying correct corrections:

        01/02/2020, 15:16:27 M98 P"0:/macros/probe test"

        does that macro do this?
        https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe#Section_Calibrate_the_Z_probe_trigger_height

        necroratundefined 1 Reply Last reply Reply Quote 0
        • necroratundefined
          necrorat @Veti
          last edited by

          @Veti ive wrote it as this to probe 3 times per spot:
          G1 Z10
          G30 S-1
          G1 Z10
          G30 S-1
          G1 Z10
          G30 S-1

          Vetiundefined 1 Reply Last reply Reply Quote 0
          • necroratundefined
            necrorat
            last edited by

            so have just run it again and i am getting quite a large variance now in the region of 0.11mm is this a mechanical issue? the machine is set up on linear rails and i have ensured that they are as square and parallel as possible

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            • Vetiundefined
              Veti @necrorat
              last edited by

              @necrorat said in mesh bed compensation not applying correct corrections:

              G1 Z10
              G30 S-1
              G1 Z10
              G30 S-1
              G1 Z10
              G30 S-1

              that determines repeatability, but does not determine z probe trigger height as you do not determine z=0 before probing as described in the above linked document

              necroratundefined 1 Reply Last reply Reply Quote 0
              • necroratundefined
                necrorat @Veti
                last edited by

                @Veti so do i have to go though the full calibration procedure for each point that i probe on the bed?

                Vetiundefined 1 Reply Last reply Reply Quote 0
                • Vetiundefined
                  Veti @necrorat
                  last edited by

                  @necrorat
                  do one at the point where the lines where ok and one where the lines where not ok

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                  • necroratundefined
                    necrorat @Veti
                    last edited by

                    @Veti so just did a test over 5 point and theses are the results :

                    2.064
                    2.068
                    2.066
                    2.059
                    2.046

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                    • Vetiundefined
                      Veti
                      last edited by

                      thats a lot different than your original trigger height of 2.31

                      necroratundefined 1 Reply Last reply Reply Quote 0
                      • necroratundefined
                        necrorat @Veti
                        last edited by

                        @Veti i have been tinkering with the frame and alignment all day. gonna probe the bed one last time then try another print

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                        • Stuffiundefined
                          Stuffi
                          last edited by

                          Sry to bring up that old post again.

                          @necrorat Did you find a solution or the reason why the meshbed compensation didn't apply?

                          I have the same issue.

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