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    Independently leveled Z axis Issue

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    • 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

              1 Reply Last reply Reply Quote 0
              • 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

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

                                            @3DPrintingWorld In your bed.g do you have it do multiple probes per point ? If so how do you accomplish that ?

                                            fcwiltundefined 3DPrintingWorldundefined 2 Replies Last reply Reply Quote 0
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