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    Independently leveled Z axis Issue

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    • mrenz999undefined
      mrenz999
      last edited by

      I am having this same issue. It used to Level pretty close to perfect. Now it does the same as yours. It lifts the right, rear corner and lowers the left side of the bed. I have checked belt tensions, remeasured my z screw positions. Have had no success figuring it out.

      3DPrintingWorldundefined 1 Reply Last reply Reply Quote 0
      • 3DPrintingWorldundefined
        3DPrintingWorld @mrenz999
        last edited by

        @mrenz999 Oh, I wonder if we have the same problem or if its just a coincidence. What printer do you have, or is it a custom build?

        Have you tired physically swapping two motors just to see if the results change?

        mrenz999undefined 1 Reply Last reply Reply Quote 0
        • martin7404undefined
          martin7404
          last edited by martin7404

          So today I made quite a few experiments chasing my problem with moving of the U carriage during printing with X.
          A few days ago I tried to put both Y motors on ZA and ZB conectors , just to find that one of my Z connectors is not energizing the motor.
          I ordered a new Duet wifi and while waiting today decided to try to move 3 Z motors on wifi and x,y,u on DUEX board.
          So I put 3Z motors on P1,2,3 and the motor on 2 is not energized, then moved the motors to 0,1,2 and it is working , but center motor is inverted (2), So I make it to move in the right direction with inverted motor, but when G32 it is corecting wrong direction, I do not know why
          then tried on 234 and 2 is not working, then defined this:

          ; Drives
          M569 P2 S1                                 ; X physical drive 0 goes backwards
          M569 P3 S1; Z
          ;M569 P3 S0
          M569 P4 S0
          ;M569 P1 S0                                     ; Y right physical drive 1 goes backwards
          ;M569 P2 S1                                      ; Y left physical drive 2 goes forwards
          ;M569 P3 S1                                      ; U physical drive 3 goes forwards
          M569 P1 S1                                     ; E1 physical drive 4 goes backwards
          M569 P5 S0 ; X
          M569 P6 S1 ; Y right
          M569 P7 S0 ; Y left
          ;M569 P5 S1                                      ; Z left physical drive 5 goes backwards
          ;M569 P6 S1                                     ; Z center physical drive 6 goes backwards
          ;M569 P7 S0                                      ; Z right physical drive 7 goes forwards
          M569 P8 S1                                      ; E2 physical drive 8 goes forwards
          M569 P9 S1 ; U
          
          M584 X5 Y6:7  Z0:3:4 U9 E1:8                     ; set drive mapping
          
          

          and it is working like a charm . Ther is some kind of short on this board ,period. Now the movement of U with dial indicator when changin gY direction is 0.04 and X is 0.05

          Muldex IDEX Duet2+Duex5
          Custom CoreXY 600x400 Hemera , Duet3+Toolboard+1HCL closed loop
          Sapphire Pro with Duet2, with closed-loop motors
          custom high temp E3D tool changer with Duet2+Duex

          fcwiltundefined 1 Reply Last reply Reply Quote 0
          • fcwiltundefined
            fcwilt @martin7404
            last edited by

            @martin7404

            Do you ever turn the steppers or move an axis by hand when the power is off?

            That can damage the driver chip connected to that stepper or steppers.

            Frederick

            Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

            1 Reply Last reply Reply Quote 0
            • martin7404undefined
              martin7404
              last edited by

              I am usually very careful and do hand movements with power on .
              The thing is now it is working

              Muldex IDEX Duet2+Duex5
              Custom CoreXY 600x400 Hemera , Duet3+Toolboard+1HCL closed loop
              Sapphire Pro with Duet2, with closed-loop motors
              custom high temp E3D tool changer with Duet2+Duex

              fcwiltundefined 1 Reply Last reply Reply Quote 0
              • fcwiltundefined
                fcwilt @martin7404
                last edited by

                @martin7404 said in Independently leveled Z axis Issue:

                I am usually very careful and do hand movements with power on .
                The thing is now it is working

                You mentioned that a driver or two seemed to have failed which is why I made my post.

                Glad to hear you got things sorted.

                Frederick

                Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

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                • martin7404undefined
                  martin7404
                  last edited by martin7404

                  🙂
                  It is sorted in wierd way , new board is on the way
                  PS it is not sorted U is moving during printing with X even all the X,Yand U motors are now on DUEX

                  Muldex IDEX Duet2+Duex5
                  Custom CoreXY 600x400 Hemera , Duet3+Toolboard+1HCL closed loop
                  Sapphire Pro with Duet2, with closed-loop motors
                  custom high temp E3D tool changer with Duet2+Duex

                  fcwiltundefined 1 Reply Last reply Reply Quote 0
                  • mrenz999undefined
                    mrenz999 @3DPrintingWorld
                    last edited by

                    @3DPrintingWorld I have tried swapping motors. No difference. I have a BLV Mgn. So yes I built it. It's a custom with a 410x410 bed

                    3DPrintingWorldundefined 1 Reply Last reply Reply Quote 0
                    • 3DPrintingWorldundefined
                      3DPrintingWorld @mrenz999
                      last edited by

                      @mrenz999 The BLV is very nice! 👍
                      That's the part that throws me, how is it possible that you can switch the motors but it still corrects to the same plane....

                      I think I'm just going to have to bite the bullet and try a new boards, I'm running out of ideas.

                      fcwiltundefined mrenz999undefined 2 Replies Last reply Reply Quote 0
                      • fcwiltundefined
                        fcwilt @martin7404
                        last edited by

                        @martin7404 said in Independently leveled Z axis Issue:

                        🙂
                        It is sorted in wierd way , new board is on the way
                        PS it is not sorted U is moving during printing with X even all the X,Yand U motors are now on DUEX

                        Well having the Z steppers on the Duex wasn't part of the problem in the first place.

                        Frederick

                        Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

                        1 Reply Last reply Reply Quote 0
                        • fcwiltundefined
                          fcwilt @3DPrintingWorld
                          last edited by

                          @3DPrintingWorld said in Independently leveled Z axis Issue:

                          @mrenz999 The BLV is very nice! 👍
                          That's the part that throws me, how is it possible that you can switch the motors but it still corrects to the same plane....

                          I think I'm just going to have to bite the bullet and try a new boards, I'm running out of ideas.

                          How about doing G29 with just a 4 point grid covering most of the bed and posting a screen snap of the height map?

                          It's possible to level the bed as far as the 2, 3 or 4 points controlled by the steppers and still have twist to the bed.

                          A 4 point height map will reveal such twist.

                          Frederick

                          Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

                          1 Reply Last reply Reply Quote 0
                          • mrenz999undefined
                            mrenz999 @3DPrintingWorld
                            last edited by

                            @3DPrintingWorld The interesting part is we are both having the same weird twist in the same direction. Very weird to me.

                            fcwiltundefined 1 Reply Last reply Reply Quote 0
                            • fcwiltundefined
                              fcwilt @mrenz999
                              last edited by

                              @mrenz999 said in Independently leveled Z axis Issue:

                              @3DPrintingWorld The interesting part is we are both having the same weird twist in the same direction. Very weird to me.

                              Hi,

                              Can you also create a 4 point height map covering most of the bed and post a screen shot of it here?

                              Frederick

                              Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

                              mrenz999undefined 2 Replies Last reply Reply Quote 0
                              • mrenz999undefined
                                mrenz999 @fcwilt
                                last edited by

                                @fcwilt Sure. I will do that in the next 15 - 20 mins

                                fcwiltundefined 1 Reply Last reply Reply Quote 0
                                • mrenz999undefined
                                  mrenz999 @fcwilt
                                  last edited by

                                  @fcwilt What is the correct procedure for getting a 4 point height map ? 410x410 Bed ? lol

                                  fcwiltundefined 1 Reply Last reply Reply Quote 0
                                  • fcwiltundefined
                                    fcwilt @mrenz999
                                    last edited by

                                    @mrenz999 said in Independently leveled Z axis Issue:

                                    @fcwilt Sure. I will do that in the next 15 - 20 mins

                                    Great.

                                    I have a MarkForged style printer with 3 Z steppers and even though the leveling appeared to work the 4 point height map still showed a "twist" along the X axis.

                                    It turned out the the Y rails (left and right) were not in the same plane which gave the appearance of the bed being "twisted" - which it wasn't.

                                    Frederick

                                    Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

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                                    • mrenz999undefined
                                      mrenz999
                                      last edited by

                                      Measuring the bed to nozzle it appears and is without question twisted. But if you tell me how to do a 4 point height map I will do one now.

                                      1 Reply Last reply Reply Quote 0
                                      • fcwiltundefined
                                        fcwilt @mrenz999
                                        last edited by

                                        @mrenz999 said in Independently leveled Z axis Issue:

                                        @fcwilt What is the correct procedure for getting a 4 point height map ? 410x410 Bed ? lol

                                        On my printer where X=0 and Y=0 is at the center of the 300 x 300 bed I used something like this:

                                        M557 X-130:130 Y-130:130 P2:2 ; define 4 point mesh for G29

                                        Your values will depend on the X and Y offsets of your probe and the min/max values of your X and Y axes. Just try to keep the probe area centered on the bed.

                                        Frederick

                                        Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

                                        mrenz999undefined 3DPrintingWorldundefined 2 Replies Last reply Reply Quote 0
                                        • mrenz999undefined
                                          mrenz999 @fcwilt
                                          last edited by

                                          @fcwilt 74F8FDA7-A36F-4BF5-8412-C47969D153D8.jpeg

                                          fcwiltundefined 1 Reply Last reply Reply Quote 0
                                          • 3DPrintingWorldundefined
                                            3DPrintingWorld @fcwilt
                                            last edited by

                                            Thanks @fcwilt, think you finally helped me realize my issue. Only four points makes the map much easier to understand.

                                            When I first ran the mesh the left back corner was really low. I have a glass plate on top of a sheet magnet. I am only using glass because I wanted to verify the bed was flat.
                                            glass-w clips.png

                                            I'm clipping down the bed in the back center left and front center right. I moved both clips to center right and reran the mesh and the low corner goes away!
                                            glass.png

                                            Upon further inspection of the magnetic sheet shows small cracks where it starts to turn blue in the first map. I think these crack are causing the issue. I'll remove the magnet an put the glass directly on the bed tomorrow and give it a try.

                                            mrenz999undefined 1 Reply Last reply Reply Quote 1
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