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    Prusa upgraded to duet, weird extrusion

    Scheduled Pinned Locked Moved Unsolved
    Tuning and tweaking
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    • Murloc992undefined
      Murloc992 @Phaedrux
      last edited by

      @Phaedrux

      So I used your settings, prints look identical, just that it printed WAY faster. Weird..

      I just noticed that my X idler might be bigger than Y one.. I will investigate shortly..

      "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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      • Murloc992undefined
        Murloc992
        last edited by

        Nope, seems identical. I am out of what I can do. Every axis seems to move extremely smoothly and fast. The frame is as rigid as it gets..

        "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

        T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
        • T3P3Tonyundefined
          T3P3Tony administrators @Murloc992
          last edited by

          @Murloc992 if you are still seeing the weird pulsing with @Phaedrux 's config then it might be worth swapping that motor with one of the other ones you bought to confirm that the problem is not with the motor.

          Another bit of elimination is to try using E1 for the extruder to rule out some weird failure mode of the driver (highly unlikely but you never know). You can use M584 to switch between E0 and E1

          www.duet3d.com

          Murloc992undefined 1 Reply Last reply Reply Quote 0
          • Murloc992undefined
            Murloc992 @T3P3Tony
            last edited by

            @T3P3Tony I already tried switching the motor, same pulsing. I haven't tried switching the driver yet, but I use dual Z, can I set Z as E0?

            "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

            T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
            • T3P3Tonyundefined
              T3P3Tony administrators @Murloc992
              last edited by

              @Murloc992 yes remap as you like. Also another option for this test you can connect two Z in series to the Z motor connector

              www.duet3d.com

              Murloc992undefined 1 Reply Last reply Reply Quote 0
              • Murloc992undefined
                Murloc992 @T3P3Tony
                last edited by

                @T3P3Tony I am printing another single wall cube and notice something new with new acceleration/jerk settings. I will post soon. I still hear the pulsing though, but it looks a bit different than before.

                "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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                • Murloc992undefined
                  Murloc992
                  last edited by

                  X Axis:
                  2019-12-19 23.22.03.jpg

                  Y Axis:
                  2019-12-19 23.22.12.jpg

                  As you can see, increasing the settings(speeds, acceleration) made the pattern reversed(of all the things) and more intense. πŸ˜…

                  "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

                  T3P3Tonyundefined 1 Reply Last reply Reply Quote 0
                  • T3P3Tonyundefined
                    T3P3Tony administrators @Murloc992
                    last edited by

                    @Murloc992 what about rotation by 45degrees?

                    www.duet3d.com

                    Murloc992undefined 1 Reply Last reply Reply Quote 0
                    • Murloc992undefined
                      Murloc992 @T3P3Tony
                      last edited by

                      @T3P3Tony

                      Let me try. πŸ€”

                      "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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                      • Murloc992undefined
                        Murloc992
                        last edited by

                        Original cube on the left, the 45 degree rotated on the right:
                        2019-12-19 23.52.32.jpg

                        "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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

                          It's gotta be the new extruder motor. Perhaps it came bad from E3D?

                          Z-Bot CoreXY Build | Thingiverse Profile

                          Murloc992undefined 1 Reply Last reply Reply Quote 0
                          • Murloc992undefined
                            Murloc992 @Phaedrux
                            last edited by

                            @Phaedrux

                            I tried the X and Y motors instead of it, all the same..

                            "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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                            • Murloc992undefined
                              Murloc992
                              last edited by Murloc992

                              Could it be belts? I changed mine to spring steel mesh belts(because I didn't have any others), I will buy proper (normal) gt2 belts tomorrow.

                              But I think with belts I would have perimeter patterns, matching the tooth spacing..

                              "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

                              Phaedruxundefined 1 Reply Last reply Reply Quote 0
                              • Phaedruxundefined
                                Phaedrux Moderator @Murloc992
                                last edited by

                                @Murloc992 said in Prusa upgraded to duet, weird extrusion:

                                spring steel mesh belts

                                That might explain the excessive ringing shown on the other models, but I don't think it explains the diagonal pattern on the cubes.

                                Z-Bot CoreXY Build | Thingiverse Profile

                                Murloc992undefined 1 Reply Last reply Reply Quote 0
                                • Murloc992undefined
                                  Murloc992 @Phaedrux
                                  last edited by Murloc992

                                  @Phaedrux
                                  2019-12-20 00.00.07.jpg

                                  The primeter walls seem to be perfect when looked from above though.

                                  Now that I zoomed the picture in, it seems microscopically blobby..?

                                  "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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                                  • Phaedruxundefined
                                    Phaedrux Moderator
                                    last edited by

                                    Were you able to test a different driver yet?

                                    Z-Bot CoreXY Build | Thingiverse Profile

                                    Murloc992undefined 1 Reply Last reply Reply Quote 0
                                    • Murloc992undefined
                                      Murloc992 @Phaedrux
                                      last edited by

                                      @Phaedrux

                                      I will right now. πŸ™‚

                                      "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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                                      • Murloc992undefined
                                        Murloc992
                                        last edited by Murloc992

                                        Same..

                                        The light is non uniform but all of them look semi identical.

                                        2019-12-20 00.26.29.jpg
                                        Left to right: the original one, 45 degree, 45 degree + swapped driver

                                        I made a video while printing this one:

                                        Raise your volume a lot to hear the pulsing:
                                        https://www.youtube.com/watch?v=wpG9eKp1ytA

                                        I know it's not the bondtech gear or the shaft for sure, as it is spinning slowly and pulsing dozens of times per rotation. Same was with the other motors.

                                        "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

                                        droftartsundefined 1 Reply Last reply Reply Quote 0
                                        • droftartsundefined
                                          droftarts administrators @Murloc992
                                          last edited by

                                          @Murloc992 said in Prusa upgraded to duet, weird extrusion:

                                          Same was with the other motors.

                                          Does the pulsing include your original 1.8ΒΊ motors?

                                          Ian

                                          Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                                          Murloc992undefined 1 Reply Last reply Reply Quote 0
                                          • Murloc992undefined
                                            Murloc992 @droftarts
                                            last edited by Murloc992

                                            @droftarts

                                            No, in the beginning of this thread I posted some older pics using the old motors. All I had were VFAs and ghosting.

                                            Actually in one pic I see faint diagonal pattern. I will test in the morning. πŸ˜ƒ

                                            "Prusa Bear" : Full Bear frame, Bear X-Axis and Extruder. Duet 2 WiFi with RRF 3.2.2.

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