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    Sovol SV08 Multiple Motion System Upgrade.

    Scheduled Pinned Locked Moved
    My Duet controlled machine
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    • dwuk3dundefined
      dwuk3d @o_lampe
      last edited by

      @o_lampe thanks. Yes tensioning will still be possible. In the factory design there are bolts that pull against springs to adjust the tension from the back, which are then locked off from the side.

      I've removed the bolts and springs for space reasons - will try to add them back in - but probably coming in from the front.

      All three pulleys at the front still have about 10mm of independent movement.

      I think I will also try removing most of the lost build area too by repositioning the pulleys before I go much further.

      dwuk3dundefined 1 Reply Last reply Reply Quote 0
      • dwuk3dundefined
        dwuk3d @dwuk3d
        last edited by

        @dwuk Reworked the design of the right hand parts and belt paths - to make to routing more compact - so a lot less build plate now lost.

        These screenshots show the factory single gantry front and rear part on the left - with the new double gantry parts on the right.

        Screenshot 2025-01-14 at 13.37.11.png Screenshot 2025-01-14 at 13.37.26.png

        Improved more compact belt routing on right hand side
        Screenshot 2025-01-14 at 13.41.18.png

        1 Reply Last reply Reply Quote 0
        • dwuk3dundefined
          dwuk3d
          last edited by

          Still waiting for a few parts - but basic Phase1 structure now complete - just needs to be belted up.

          Next step if to belt up both gantries and try running the original front gantry using the existing Klipper board just to see if it still works with the new belt routing and the 2nd gantry in the back.

          Still awaiting Mini 5 Duet Board delivery - but rest of boards arrived ok.

          Have used smaller New

          2nd extruder on back gantry just there for illustration purposes of size target - it is a Bowden extruder from the WeedoX40 donor machine.

          750BF08B-082E-4DF8-A521-8C19F8447822.jpeg

          FC42A41D-E40D-485F-8AB7-F13675776E3D_1_201_a.jpeg

          D4298745-1942-4AA5-AE6A-869E4A7F5B04.jpeg

          o_lampeundefined 1 Reply Last reply Reply Quote 1
          • o_lampeundefined
            o_lampe @dwuk3d
            last edited by

            @dwuk Having a bowden extruder in the mix makes sense if you want to print infill_every_nth_layer with a bigger nozzle.

            1 Reply Last reply Reply Quote 1
            • dwuk3dundefined
              dwuk3d
              last edited by

              All belted up.
              Short a few parts before I can do a proper test - most important of which is the linear rail carriages for the 2nd gantry, plus some idler posts.

              Some belts quite close to each other - will try both gantries out next - will have to swap the carriages.

              B430C399-9047-4F23-84BF-66DC3D970B7C_1_201_a.jpeg

              Rear left
              FED32B10-B31C-4728-BE48-91D8AFBFBC0A_1_201_a.jpeg IMG_6568.JPG

              Rear right
              D466D753-4558-4A79-898E-2B64D4A8E75D_1_201_a.jpeg

              Front left
              B8B53572-DA53-4328-8E05-26A6C9C7C513_1_201_a.jpeg

              Front right
              35A4B30B-9A66-463E-AC0D-FB298428B89A_1_201_a.jpeg

              Top with rear top halves on
              5EFA712B-DDEF-43D5-B311-D9820AB40AD6_1_201_a.jpeg

              T3P3Tonyundefined 1 Reply Last reply Reply Quote 3
              • T3P3Tonyundefined
                T3P3Tony administrators @dwuk3d
                last edited by

                @dwuk really enjoying following along with this build. Good to see the multiple motions systems code getting a chance to be used on a two head toolchanger!

                www.duet3d.com

                1 Reply Last reply Reply Quote 1
                • dwuk3dundefined
                  dwuk3d
                  last edited by dwuk3d

                  First test of the mechanics - to make sure I haven't messed up Gantry1.
                  87FDA742-BBF1-4047-B6F0-2E12B496F37B.png

                  Worked surprisingly well on existing Klipper board - see short video demo.
                  https://youtu.be/3d6z5srohSQ
                  37128F6B-42A0-4461-8173-CBAF2DE1FECB_1_201_a.jpeg

                  Can't yet get gantry 2 to work - due to lack of linear rail carriages, plus motors are probably not powerful enough - as for first try they didn't move.

                  Will try Swapping the motors around before upgrading.

                  Set smaller motors at 0.85a (the rating printed on them) - which didn't work.

                  Update - rear gantry moves ok with original sovol motors at both 0.85a and 1.5a (even with 3d printed carriages).

                  1 Reply Last reply Reply Quote 1
                  • dwuk3dundefined
                    dwuk3d
                    last edited by

                    Managed to get 2nd gantry working.

                    Had a lot of trouble with Motors - the ones I saved from a WeedoX40 wouldn't work.

                    Eventually I discovered that they have different pin connections to Sovol motors - with have the coils connected on pins 1+4 and 3+6. My motors were 1+3 and 4+6.

                    So found some other motors - from my MPCNC - which are more powerful - 1.7a - and they eventually worked.

                    Then had a lot of trouble withy homing and setting values for TMC drivers - will probably switch to end stops for the final build - but eventually got it working.

                    Then next problem was prints keep losing position - eventually worked it out that I was moving too fast for the MPCNC motors - F36000 was too fast for them - so slowed down to 18000 (300mm/s). And that sorted out the problem.

                    Decided to try a print - despite plastic bearing posts, and plastic linear rail carriages - ran the print at half speed - but it worked.

                    Did an initial print on the from gantry - then swapped over the extruder and stepper connections - and reconfigured Klipper for the different motors.

                    Demo of print on 2nd gantry here
                    https://youtu.be/7ar74Ne5ryI

                    Screenshot 2025-01-19 at 17.14.46.png

                    Have learn't quite a lot about configuring steppers which will come in useful once I try the Duet migration - which is probably now the next step.

                    1 Reply Last reply Reply Quote 3
                    • dwuk3dundefined
                      dwuk3d
                      last edited by

                      Starting to plan Duet Conversion - initially with just one Gantry and the 6LC and a single 1LC board

                      Screenshot 2025-01-19 at 23.04.47.png

                      configtool.json

                      1 Reply Last reply Reply Quote 0
                      • dwuk3dundefined
                        dwuk3d
                        last edited by

                        Added tool board wiring - looks like there are not enough connections for the 3 fans - so might have to run some extra cables from the main board. I have shown wiring for 4 fans - but I think only 3 are used.

                        Screenshot 2025-01-20 at 07.46.04.png

                        configtool-2.json

                        1 Reply Last reply Reply Quote 0
                        • dwuk3dundefined
                          dwuk3d
                          last edited by

                          Revised Toolboard wiring with the help of @jay_s_uk and @T3P3Tony

                          Screenshot 2025-01-20 at 09.01.14.png

                          Toolboard comparison - need to now work out which way up to place board and physical wiring. Ideally I want to be able to go back to Sovol board - so will have to work out some adaptors.

                          714D3898-240A-4AEB-BF98-9D255CBA380A.jpeg

                          1 Reply Last reply Reply Quote 0
                          • dwuk3dundefined
                            dwuk3d
                            last edited by dwuk3d

                            Next job is the power supply upgrade. The stock PSU is tiny - only 6.5a. I've got a 20A PSU from my WeedoX40 - so will put that in there instead. Need to decide whether to take the @TeachingTech approach- and put it in the same place as the existing PSU - which involves cutting some posts off.
                            Screenshot 2025-01-20 at 10.59.20.png

                            Or go with @JohnSC's approach and mount the new PSU at the bottom - Screenshot 2025-01-20 at 10.59.39.png

                            Then for placement of Duet Boards. The Mini5+ board hasn't arrived yet - but it can be inside somewhere. I'm thinking of putting the Duet 6HC below the existing board - here maybe

                            D22AE6FD-64D5-4EEC-BD32-B484FBF6426C_1_201_a.jpeg

                            Will involve cutting out some new holes to give access to the sd card, usb-c and ethernet. This pushes me towards the teachingTech approach to PSU placement.

                            In the end decided to go for this model as first attempt at PSU mounting

                            Screenshot 2025-01-20 at 13.52.30.png

                            1 Reply Last reply Reply Quote 0
                            • dwuk3dundefined
                              dwuk3d
                              last edited by

                              PSU Installed and design for Duet Holder done.
                              A5839622-59F4-43DF-9E93-8540B33AB425_4_5005_c.jpeg

                              Screenshot 2025-01-20 at 16.45.52.png Screenshot 2025-01-20 at 16.46.04.png

                              dwuk3dundefined 1 Reply Last reply Reply Quote 0
                              • dwuk3dundefined
                                dwuk3d @dwuk3d
                                last edited by

                                @dwuk Duet3 6HC board now installed - now for lots of wiring up.
                                AD045D3E-FDAA-4746-8DA5-221BBA1444AC_1_201_a.jpeg 9482B9A4-0C76-4553-A9D5-5CDADAD7692A_1_201_a.jpeg 35AFF38C-B36A-4A8B-B19B-1008CB011F91_1_201_a.jpeg

                                1 Reply Last reply Reply Quote 0
                                • dwuk3dundefined
                                  dwuk3d
                                  last edited by

                                  Starting to plan for expansion boards - looks like there is room,

                                  155207F1-0936-4054-A140-B7C0D9E15800.png 5D5F091D-BC65-49DC-8087-D004171F762E.png

                                  Tool Distribution board and first Mini5+ needed for Dual Gantry, with further Mini 5 probably needed for IDEX - unless I can reduce the stepper requirement - by using less for IDEX and Servo's for Z Hoppers.

                                  droftartsundefined 1 Reply Last reply Reply Quote 2
                                  • droftartsundefined
                                    droftarts administrators @dwuk3d
                                    last edited by

                                    @dwuk This is all such an amazing project, along with your work on splitting the slicer output for two tools to print at the same time. Keep up the good work, and thanks for documenting it so well!

                                    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

                                    dwuk3dundefined 1 Reply Last reply Reply Quote 1
                                    • dwuk3dundefined
                                      dwuk3d
                                      last edited by

                                      Good progress made on Duet6hc commissioning. Power and first 6 steppers wired up, and firmware upgraded.

                                      Think I will try and see if I can get some movement tomorrow - before tackling the harder problem of the 1LC wiring.

                                      85D28E79-EB03-4034-8F3B-32BE2CC0686C_1_201_a.jpeg 620B117E-D8BE-494E-A4FD-007EBF2BB566_1_201_a.jpeg

                                      Old board and wiring left in place for now - if nothing else it will be useful for it to provide the camera feed.

                                      1 Reply Last reply Reply Quote 0
                                      • dwuk3dundefined
                                        dwuk3d @droftarts
                                        last edited by

                                        @droftarts. Thanks - really enjoying the project so far - I can see why people spend so much effort on printer upgrades and self builds. Will be really interesting to see whether parallel printing is practical.

                                        o_lampeundefined 1 Reply Last reply Reply Quote 0
                                        • o_lampeundefined
                                          o_lampe @dwuk3d
                                          last edited by

                                          @dwuk said in Sovol SV08 Multiple Motion System Upgrade.:

                                          interesting to see whether parallel printing is practical.

                                          I'm sure there is a niche for it, same as for tool changers or MMU-printers. Each system has some drawbacks, here:
                                          Building/commissioning/homing and maintaining perfect z-height will be a nightmare.

                                          dwuk3dundefined 1 Reply Last reply Reply Quote 0
                                          • dwuk3dundefined
                                            dwuk3d @o_lampe
                                            last edited by dwuk3d

                                            @o_lampe Agreed Automated alignment, homing, maintaining perfect z-height are all essential, plus also speed, reliability, filament colour/material management & slicing.

                                            In terms of niche MMU - I use the AMS on my BL printers 99% of the time - always for filament selection for single colour prints - but also pretty often for 4-11 colour prints -

                                            I wasn't sure how much use I would get out of a 2nd identical multi colour printer (which I bought to double my printing speed) -

                                            In my usage scenarios when I am using one of the printers I find I end up using the second one too for at least half of the time. It's usually only filament management that stops me from using the 2nd one even more often. i.e. Not having two sets of every filament needed. I've got a few ideas on how to solve this problem too - with some sort of automatic on demand filament roll splitter.

                                            Tool changers I agree are more niche - probably due to the expense of having so much print head hardware sitting around unused for 99% of the time, plus also being limited on the number of colours supported. I think MMU/AMS type multiplexers are more practical for prints with many colours in them - but 2 to 4 extra 'tool changer' print heads I think could help speed up print times and reduce waste quite a bit without adding massively to the cost. A solution that only changes the nozzle and hot end would be even more useful too.

                                            Building and Commissioning I would see as a separate problem - which would ideally be solved by a manufacturer taking up the idea.

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