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    Help Core XY

    Scheduled Pinned Locked Moved
    Tuning and tweaking
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    • Davundefined
      Dav
      last edited by

      Hi
      I finished my corexy, I mad few prints and this is my result, who can help me to fix this kind of problem?
      This is my conf:

      ; Drives
      M569 P0 S1 ; physical drive 0 goes forwards
      M569 P1 S1 ; physical drive 1 goes forwards
      M569 P2 S1 ; physical drive 2 goes forwards
      M569 P3 S0 ; physical drive 3 goes forwards
      M584 X0 Y1 Z2 E3 ; set drive mapping
      M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
      M92 X80.00 Y80.00 Z400.00 E415.00 ; set steps per mm
      M566 X600 Y600 Z60 E600 ; Maximum jerk in mm/min
      M203 X12000 Y12000 Z1200 E2500 ; set maximum speeds (mm/min)
      M201 X800 Y800 Z60 E1200 ; set accelerations (mm/s^2)
      M906 X800 Y800 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
      M84 S30 ; Set idle timeoutWhatsApp Image 2020-03-03 at 20.00.07.jpeg WhatsApp Image 2020-03-03 at 20.00.07 (1).jpeg WhatsApp Image 2020-03-03 at 20.00.07 (2).jpeg

      Phaedruxundefined 1 Reply Last reply Reply Quote 0
      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        Is your slicer changing your acceleration on you? The config values are pretty conservative, but the amount of ringing would indicate a very high acceleration or loose mechanics of some kind. Loose belts? Broken plastic part? Cheap stretchy belts?

        Z-Bot CoreXY Build | Thingiverse Profile

        Davundefined 3 Replies Last reply Reply Quote 0
        • Davundefined
          Dav @Phaedrux
          last edited by Dav

          @Phaedrux I'm using simplify 3d, I don't have special script.
          From simplify I print at 70mms.
          I don't know if can be the belts.

          I'm using 6mm belt, what do you suggest to buy?

          1 Reply Last reply Reply Quote 0
          • Davundefined
            Dav @Phaedrux
            last edited by

            @Phaedrux this is a cube with the same configuration
            20200303_203835.jpg
            20200303_203831.jpg

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            • Davundefined
              Dav @Phaedrux
              last edited by

              @Phaedrux do you suggest to change the 6mm belt with 9mm?

              deckingmanundefined 1 Reply Last reply Reply Quote 0
              • deckingmanundefined
                deckingman @Dav
                last edited by

                @Dav 6mm belts are fine - 9mm won't cure your problems. What hot end and extrude are you using. How are they mounted? Is it Bowden or direct drive? Can you post some pictures of the printer.

                Ian
                https://somei3deas.wordpress.com/
                https://www.youtube.com/@deckingman

                Davundefined 1 Reply Last reply Reply Quote 0
                • Davundefined
                  Dav @deckingman
                  last edited by

                  @deckingman it's a sapphire plus printer, all mechanical parts are in metal, I changed the power supply with meanwell and motherboard with duet.
                  I use bowden configuration with bondtech.
                  At the moment the original parts are belt and e3d non original. 20200229_122921.jpg

                  deckingmanundefined 1 Reply Last reply Reply Quote 0
                  • Phaedruxundefined
                    Phaedrux Moderator
                    last edited by

                    Are you able to tension the belts?

                    Z-Bot CoreXY Build | Thingiverse Profile

                    Davundefined 2 Replies Last reply Reply Quote 0
                    • deckingmanundefined
                      deckingman @Dav
                      last edited by

                      @Dav If you put a finger on the nozzle with the motors on and belts locked, can you move it back and forth or from left to right?

                      Ian
                      https://somei3deas.wordpress.com/
                      https://www.youtube.com/@deckingman

                      Davundefined 1 Reply Last reply Reply Quote 0
                      • Davundefined
                        Dav @Phaedrux
                        last edited by

                        @Phaedrux I changed right now old belts with gates gt2 6mm,now I'm printing again same cube.

                        1 Reply Last reply Reply Quote 0
                        • Davundefined
                          Dav @deckingman
                          last edited by

                          @deckingman no I can't

                          1 Reply Last reply Reply Quote 0
                          • Davundefined
                            Dav @Phaedrux
                            last edited by

                            @Phaedrux 20200303_222919.jpg 20200303_222931.jpg

                            On the left old non original belts, on the right gt2 belts... Same result..

                            Do you have a profile for simplify or slic3r to test?

                            1 Reply Last reply Reply Quote 0
                            • Phaedruxundefined
                              Phaedrux Moderator
                              last edited by

                              PrusaSlicer 2.2 RC config.csv

                              Rename it to config.ini. You'll need to change the nozzle size and extrusion width for your printer. I'm using 0.6mm nozzle.

                              If you disconnect the belts and move the print head around manually, does it feel smooth?

                              Are there any belt tensioners? Are both belts equally tensioned?
                              If you wiggle things around, is there anything that feels loose?
                              Are the belt teeth riding on toothed idlers or flat idlers?

                              Z-Bot CoreXY Build | Thingiverse Profile

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

                                If this is the same printer that was causing your Z axis problems, the belt layout is wrong for corexy and the belt tension is going to vary as the extruder moves around. That can easily lead to excessive ringing and the amount of it may vary depending on where the print sits on the bed. I suggest that you fix the belt path problem first, then tackle the print quality problems that remain.

                                https://drmrehorst.blogspot.com/

                                Phaedruxundefined 1 Reply Last reply Reply Quote 0
                                • Phaedruxundefined
                                  Phaedrux Moderator @mrehorstdmd
                                  last edited by

                                  @mrehorstdmd I don't think the diagram from the other thread is accurate to how the sapphire plus is actually laid out. At least not from any of the reviews I've seen of it. From what I gather it's a correctly designed corexy.

                                  Z-Bot CoreXY Build | Thingiverse Profile

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

                                    @Phaedrux It looks like the diagram came from an review of the Sapphire Plus and Sapphire Pro printers at All3DP. If that is a diagram supplied by 2Trees, it doesn't look good...

                                    https://drmrehorst.blogspot.com/

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                                    • Davundefined
                                      Dav @Phaedrux
                                      last edited by Dav

                                      @Phaedrux ok tried with your profile and I think is much better

                                      20200303_233954.jpg 20200303_234009.jpg

                                      On the left your profile.

                                      I think there is something to change for jerk to optimise all edges.

                                      What do you think?

                                      Without belt x and y are very smooth, all mechanic I think is good and ok.

                                      Could you share your conf.g?

                                      1 Reply Last reply Reply Quote 0
                                      • Stephen6309undefined
                                        Stephen6309
                                        last edited by

                                        This may help:

                                        https://duet3d.dozuki.com/Wiki/Gcode#Section_M593_Configure_Dynamic_Acceleration_Adjustment

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                                        • Phaedruxundefined
                                          Phaedrux Moderator @Dav
                                          last edited by

                                          @Dav said in Help Core XY:

                                          M566 X600 Y600 Z60 E600 ; Maximum jerk in mm/min
                                          M203 X12000 Y12000 Z1200 E2500 ; set maximum speeds (mm/min)
                                          M201 X800 Y800 Z60 E1200 ; set accelerations (mm/s^2)

                                          This isn't far off from my own config.g settings.

                                          Z-Bot CoreXY Build | Thingiverse Profile

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                                          • Phaedruxundefined
                                            Phaedrux Moderator
                                            last edited by

                                            It looks like it could be printed a bit hot. Do you know the thermistor settings for that hotend? Have you tried a temperature tower?

                                            Z-Bot CoreXY Build | Thingiverse Profile

                                            Davundefined 2 Replies Last reply Reply Quote 0
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