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    straight lines are (no longer) straight

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    • spllgundefined
      spllg
      last edited by

      sorry for this new request for help ..

      we just have experienced that straight lines are (no longer) straight but kind of crooked in x- and in y-direction.

      see attached image. 20201101_181507.jpg

      we tested using cura 4.7.1 and slic3r 1.3.0

      is there a known solution for this issue?

      tia for any assistance.

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      • Vetiundefined
        Veti
        last edited by

        this is most likely a mechanical issue.

        what kind of printer is it?

        spllgundefined 1 Reply Last reply Reply Quote 0
        • spllgundefined
          spllg @Veti
          last edited by spllg

          @Veti it's a self made printer (blv mgn). what do you suggest to check/fix?

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          • Vetiundefined
            Veti
            last edited by

            check belt tension

            and recheck that each corner is still 90 degrees

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            • spllgundefined
              spllg
              last edited by spllg

              thanks for your answer.

              we checked and did not find any issue.

              the strange thing is that that 2 lines (left and bottom) are fairly straight while the other 2 lines (right and top) are crooked. because it's a core xy printer this makes us think that the issue might be related to the direction of rotation of the steppers.

              have you got any further hints?

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              • spllgundefined
                spllg
                last edited by

                we can see the head moving in x and y direction where it should not move in these directions.

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                • Vetiundefined
                  Veti
                  last edited by

                  remove the belt and see if everything moves without resistance.

                  spllgundefined 1 Reply Last reply Reply Quote 0
                  • mrehorstdmdundefined
                    mrehorstdmd
                    last edited by

                    Does the machine have steel core belts?

                    https://drmrehorst.blogspot.com/

                    spllgundefined 1 Reply Last reply Reply Quote 0
                    • spllgundefined
                      spllg @mrehorstdmd
                      last edited by

                      @mrehorstdmd no, it's got fiberglass belts as.

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                      • spllgundefined
                        spllg @Veti
                        last edited by

                        @Veti when i last had removed the belts everything moved without resistance but i'll check when a find enough time and energy after my bread and butte job.

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                        • JamesMundefined
                          JamesM
                          last edited by

                          I just took apart my first blv printer because I was noticing the same thing and it turned out it was no longer square. I would check the frame by measuring on diagonals....front right to left rear and front left to right rear. See if they are identical. If not then it's time for a tear-down.

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