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Independently leveled Z axis Issue

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  • undefined
    martin7404
    last edited by 8 Mar 2021, 16:12

    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

    undefined 1 Reply Last reply 8 Mar 2021, 16:28 Reply Quote 0
    • undefined
      fcwilt @martin7404
      last edited by 8 Mar 2021, 16:28

      @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 small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

      1 Reply Last reply Reply Quote 0
      • undefined
        martin7404
        last edited by martin7404 3 Aug 2021, 16:51 8 Mar 2021, 16:40

        🙂
        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

        undefined 1 Reply Last reply 8 Mar 2021, 17:55 Reply Quote 0
        • undefined
          mrenz999 @3DPrintingWorld
          last edited by 8 Mar 2021, 17:21

          @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

          undefined 1 Reply Last reply 8 Mar 2021, 17:53 Reply Quote 0
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            3DPrintingWorld @mrenz999
            last edited by 8 Mar 2021, 17:53

            @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.

            undefined undefined 2 Replies Last reply 8 Mar 2021, 17:57 Reply Quote 0
            • undefined
              fcwilt @martin7404
              last edited by 8 Mar 2021, 17:55

              @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 small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

              1 Reply Last reply Reply Quote 0
              • undefined
                fcwilt @3DPrintingWorld
                last edited by 8 Mar 2021, 17:57

                @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 small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                1 Reply Last reply Reply Quote 0
                • undefined
                  mrenz999 @3DPrintingWorld
                  last edited by 8 Mar 2021, 22:25

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

                  undefined 1 Reply Last reply 8 Mar 2021, 22:38 Reply Quote 0
                  • undefined
                    fcwilt @mrenz999
                    last edited by 8 Mar 2021, 22:38

                    @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 small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                    undefined 2 Replies Last reply 8 Mar 2021, 22:39 Reply Quote 0
                    • undefined
                      mrenz999 @fcwilt
                      last edited by 8 Mar 2021, 22:39

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

                      undefined 1 Reply Last reply 8 Mar 2021, 22:45 Reply Quote 0
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                        mrenz999 @fcwilt
                        last edited by 8 Mar 2021, 22:44

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

                        undefined 1 Reply Last reply 8 Mar 2021, 22:50 Reply Quote 0
                        • undefined
                          fcwilt @mrenz999
                          last edited by 8 Mar 2021, 22:45

                          @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 small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            mrenz999
                            last edited by 8 Mar 2021, 22:47

                            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
                            • undefined
                              fcwilt @mrenz999
                              last edited by 8 Mar 2021, 22:50

                              @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 small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                              undefined undefined 2 Replies Last reply 9 Mar 2021, 01:33 Reply Quote 0
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                                mrenz999 @fcwilt
                                last edited by 9 Mar 2021, 01:33

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

                                undefined 1 Reply Last reply 9 Mar 2021, 01:46 Reply Quote 0
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                                  3DPrintingWorld @fcwilt
                                  last edited by 9 Mar 2021, 01:36

                                  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.

                                  undefined 1 Reply Last reply 9 Mar 2021, 01:39 Reply Quote 1
                                  • undefined
                                    mrenz999 @3DPrintingWorld
                                    last edited by 9 Mar 2021, 01:39

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

                                    undefined undefined 2 Replies Last reply 9 Mar 2021, 01:48 Reply Quote 0
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                                      fcwilt @mrenz999
                                      last edited by 9 Mar 2021, 01:46

                                      @mrenz999 Thanks.

                                      The is an extreme version of what my height map looked like.

                                      Is this what the frame of your printer looks like?

                                      BLV Printer Frame.jpg

                                      Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                                      1 Reply Last reply Reply Quote 0
                                      • undefined
                                        mrenz999
                                        last edited by mrenz999 3 Sept 2021, 01:48 9 Mar 2021, 01:47

                                        Yes thats the one 🙂 Except I have 3 z motors. 2 on the right side and 1 on the left

                                        undefined 1 Reply Last reply 9 Mar 2021, 01:49 Reply Quote 0
                                        • undefined
                                          fcwilt @mrenz999
                                          last edited by 9 Mar 2021, 01:48

                                          @mrenz999 said in Independently leveled Z axis Issue:

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

                                          Read up about the A and S parameters of M558.

                                          If A = 10 and S=0.01 the process will probe each point up to 10 times trying to get two consecutive readings with 0.01.

                                          If it fails to do that it will average all 10 readings.

                                          Frederick

                                          Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                                          undefined 1 Reply Last reply 9 Mar 2021, 01:49 Reply Quote 0
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