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    Orbiter 2 extruder mounting for Smart effector with Magball arms

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    Smart effector for delta printers
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    • weed2allundefined
      weed2all
      last edited by weed2all

      This post is deleted!
      1 Reply Last reply Reply Quote 0
      • Adrian52undefined
        Adrian52 @vapvap
        last edited by

        @vapvap I have just added it to the thingiverse thing 5402227

        vapvapundefined 1 Reply Last reply Reply Quote 1
        • Adrian52undefined
          Adrian52 @dc42
          last edited by

          @dc42 I find an extra 12mm allows the orbiter 2 to be mounted horizontally with a minimal vertical filament path between extruder and hotend, whilst maintaining the 55mm arm separation. I find the 55mm separation works well - you don't have to modify carriages, and the performance seems fine. I have been printing at 250mm/sec, with travel at 300mm/sec.

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          • vapvapundefined
            vapvap @Adrian52
            last edited by

            @adrian52 Thanks a lot.
            What plastic do you use/recommend for this part?

            Adrian52undefined 1 Reply Last reply Reply Quote 0
            • Adrian52undefined
              Adrian52 @vapvap
              last edited by

              @vapvap it works OK with PLA, although I am currently printing a set in nylon - will report if I can see a difference.

              1 Reply Last reply Reply Quote 1
              • Snimaxundefined
                Snimax @dc42
                last edited by Snimax

                @dc42 I've made a quick and dirty model approximating how big the smart effector would need to be for me to be able to mount an Orbiter directly on-top of where the bolt is. With my specs it would need to be a distance of around 71.3 mm between the ball studs. I've angled the extruder by 15 degrees to make it take slightly less space in between the arms.

                The cones visualize the maximum reach of the arms for my delta with a 350mm bed and 440mm arms.

                6f9ddd6f-1f4d-418b-95db-88428b994e1f-image.png

                Its probably possible to make it an even tighter fit by tweaking the parameters but I thought it was good enough to continue the discussion ¯\(ツ)/¯

                dc42undefined Adrian52undefined 2 Replies Last reply Reply Quote 0
                • dc42undefined
                  dc42 administrators @Snimax
                  last edited by

                  @snimax thanks, that's very useful. Did you leave the spacing between adjacent ball studs in the corners the same, or did you increase that too?

                  Duet WiFi hardware designer and firmware engineer
                  Please do not ask me for Duet support via PM or email, use the forum
                  http://www.escher3d.com, https://miscsolutions.wordpress.com

                  Snimaxundefined Adrian52undefined 2 Replies Last reply Reply Quote 0
                  • Adrian52undefined
                    Adrian52 @Snimax
                    last edited by

                    @snimax tried to take a picture of my version from the same viewpoint
                    alt text

                    I have maintained the 55mm spacing, and find a good fit with the motor orientated as shown. The effector is in its furthest 'Y' position, where the arms are closest to the motor.

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                    • Snimaxundefined
                      Snimax @dc42
                      last edited by

                      @dc42 I tried to keep the spacing between the balls at the corners. I think there was a formula somewhere of the stability of the effector where you wanted to keep that spacing short but I cant recall where I saw it 😕

                      @Adrian52 Looks good! I like the idea of having a straight and much shorter filament path, compared to my adapter where the filament is in a slight s-shape 🙂 Haven't gotten around to compare it yet though

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                      • Adrian52undefined
                        Adrian52 @dc42
                        last edited by

                        @dc42 I have now done an adapter that maintains the 12mm spacing of the magballs

                        alt text

                        The carriage adapters look like this

                        alt text

                        I played with the offset, settling on moving the centre line of the studs 7.5mm from the base of the triangle. This gives very close (within 0.02mm) spacing of 81mm for the arms, requiring a 13mm spacer on each side of the carriage. As you can see, this gives plenty of room for the orbiter 2 mounted with a straight vertical filament path.

                        I have printed these in nylon using 80% infill, which seems to give a slightly better result than PLA .

                        Not much experience printing with this setup yet, but the initial impression is of increased precision over the 55mm arm separation.

                        dc42undefined vapvapundefined 2 Replies Last reply Reply Quote 1
                        • dc42undefined
                          dc42 administrators @Adrian52
                          last edited by dc42

                          @adrian52 thanks. Wider arm spacing is generally preferred, because it provides greater rigidity and less sensitivity to small geometric errors.

                          Duet WiFi hardware designer and firmware engineer
                          Please do not ask me for Duet support via PM or email, use the forum
                          http://www.escher3d.com, https://miscsolutions.wordpress.com

                          Adrian52undefined 1 Reply Last reply Reply Quote 0
                          • Adrian52undefined
                            Adrian52 @dc42
                            last edited by

                            @dc42 I should have done my homework. According to the reprap wiki here , stability decreases linearly with ball gap, but increases with the square of arm gap. So compared to the standard geometry, keeping the arm gap decreases stability almost threefold, whilst the 12mm ball gap with wider arms more than doubles stability. I think I was so impressed with the improvement of direct drive over the bowden that I didn't consider the effect of geometry on stability.

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                            • vapvapundefined
                              vapvap @Adrian52
                              last edited by

                              @adrian52 As always, great idea!
                              And as usual - we are waiting for the addition to "thingiverse".

                              Adrian52undefined 1 Reply Last reply Reply Quote 0
                              • Adrian52undefined
                                Adrian52 @vapvap
                                last edited by

                                @vapvap Thanks. Posted it now

                                https://www.thingiverse.com/thing:5463328

                                vapvapundefined 1 Reply Last reply Reply Quote 1
                                • vapvapundefined
                                  vapvap @Adrian52
                                  last edited by

                                  @adrian52 Thank you so much for sharing your ideas with us.
                                  Do you do any additional fine-tuning in the firmware?

                                  1 Reply Last reply Reply Quote 0
                                  • vapvapundefined
                                    vapvap
                                    last edited by

                                    Can anyone explain how to set this up?
                                    With "Delta Calibration (G32)", the nozzle began to scratch on the center of the table ...

                                    weed2allundefined 1 Reply Last reply Reply Quote 0
                                    • weed2allundefined
                                      weed2all @vapvap
                                      last edited by weed2all

                                      @vapvap have you run thru
                                      https://docs.duet3d.com/en/User_manual/Tuning/Delta_calibration

                                      1 Reply Last reply Reply Quote 0
                                      • weed2allundefined
                                        weed2all @Fred-Y
                                        last edited by weed2all

                                        my LGX lite direct drive mount for smart effector for my 3 kossel printers
                                        photo_2022-10-18_15-02-58.jpg photo_2022-10-18_15-02-55.jpg
                                        photo_2022-10-18_15-02-52.jpg photo_2022-10-18_15-02-49.jpg photo_2022-10-18_15-02-45.jpg photo_2022-10-18_15-02-39.jpg photo_2022-10-18_15-02-30.jpg

                                        PCRundefined 1 Reply Last reply Reply Quote 2
                                        • Falkiaundefined
                                          Falkia @Fred-Y
                                          last edited by

                                          @Fred-Y I have been thinking of that solution for my Orbiter 2.0. With my 80mm rod spacing adapter the Orbiter can be mounted horizontally.

                                          Orbiter_a.PNG
                                          Orbiter_b.PNG
                                          Orbiter_c.PNG

                                          Printer: "Deltacus" Delta with 510mm bed diameter and 925mm build height. Powered by Duet 2 WiFi. Duet Smart Effector with E3D Volcano.

                                          Falkiaundefined 1 Reply Last reply Reply Quote 1
                                          • Falkiaundefined
                                            Falkia @Falkia
                                            last edited by Falkia

                                            Made some mounts for the Orbiter 2.0. Works great with my 80mm smart effector adapter. Weight is 12 grams.

                                            received_640196257769560.jpeg

                                            Printer: "Deltacus" Delta with 510mm bed diameter and 925mm build height. Powered by Duet 2 WiFi. Duet Smart Effector with E3D Volcano.

                                            1 Reply Last reply Reply Quote 3
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