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    Pictures of water-cooling

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    • mrehorstdmdundefined
      mrehorstdmd
      last edited by

      Maybe you could put the Duet board in a tub of mineral oil and circulate it through a radiator with a pump. Maybe mineral oil and vinyl insulation on wires are a bad mix. With a 50C chamber, the motors don't need any cooling. If your active cooling system fails, your Duet dies. If it leaks, you have a mess to clean up and maybe the Duet dies, too, depending on the cooling fluid.

      Is it that much easier to add a bunch active cooling stuff than to simply extend some wires? Or build a subenclosure around the Duet board and blow room air through it? A subenclosure can be built in minutes using foam insulation board and duct tape.

      I put the XY steppers outside the chamber in my printer before I knew that they weren't going to get hot enough to bother doing so. They are mounted on aluminum mounts that are screwed to aluminum plates. I'm not sure which direction the heat flows but I suspect that once the chamber gets to 50C the metal plates are heating the motors up more than the reverse. When I run the printer without the chamber heater the motors don't get more than a few degrees above ambient temperature. One of these days I'll take a picture with a thermal camera...

      I put the electronics in an enclosure at the top of the printer which keeps most of the cables from the Duet board to the electronics pretty short and makes for comfortable, eye-level access for doing things like updating firmware, making wiring changes, etc. A lot of people put the electronics at the bottom of the printer, under the bed, but that can be a bit troublesome if you need to access the electronics and the Z axis isn't working.

      https://drmrehorst.blogspot.com/

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      • DaBitundefined
        DaBit
        last edited by

        My printer is basically an upgrade of the one I built a few years ago using LinuxCNC, which had it's electronics below the build chamber. That space is now taken by a filament container. All in all, it is not ideal with the Duet as-is, but until I decide to build a fresh one it will have to do. Accessibility of the Duet in the chamber is great, which is great as long as the printer is still a work in progress.

        IMHO heat management of the stepper drives on the Duet2Wifi is borderline at best, especially when running 1.8-2Amp winding currents for X,Y and Z steppers. Without a fan blowing air over the bottom side of the board this won't even work at room temperature with the board mounted vertically.

        I can glue heatsinks on and mount yet another noisy fan as I often see in Duet installs, but since I have the liquid lines going to the printhead anyway and a CNC mill it is just as easy to mill a waterblock from a bit of scrap and use that instead.
        I am not afraid of watercooling, on the contrary. It usually results in quiet, compact systems and in all the years I am doing it I have not had a single failure. The magnetically driven pumps are extremely reliable, so are standard pneumatic push-in couplings/distributors/hoses, and a single low rpm 80-120mm Papst fan on a small radiator is silent and provides far, far more cooling power than a 3D printer needs.

        Of course you have to account for failure; given enough time everything breaks. But the internal thermal protection of the stepper drives account for that on the Duet side. If coolant (distilled water + Valvoline supercoolant) leaks, things may get wet. No big deal, just clean it. The Duet is unlikely to die from that unless the leak is not caught for weeks.

        1 Reply Last reply Reply Quote 1
        • Nuramoriundefined
          Nuramori
          last edited by

          Here’s mine.

          printhead

          the back

          tech-ratonundefined laelundefined GeneRisiundefined 3 Replies Last reply Reply Quote 1
          • tech-ratonundefined
            tech-raton @Nuramori
            last edited by

            Here's mine too

            alt text
            alt text
            alt text

            laelundefined 1 Reply Last reply Reply Quote 0
            • piperswundefined
              pipersw
              last edited by

              thanks !

              1 Reply Last reply Reply Quote 0
              • fmaundefined
                fma
                last edited by

                Guys, could you put links of the pump/tank/etc... you are using? Thanks!

                Frédéric

                tech-ratonundefined 1 Reply Last reply Reply Quote 0
                • DaBitundefined
                  DaBit
                  last edited by DaBit

                  I am using a Laing DDC pump. Advantage of that one over the average aquarium pump is it's ability to produce some pressure, allowing the use of 4mm O.D. tubing to distribute the liquid.

                  Makes a quite compact setup:
                  alt text

                  Pump is not very visible in this picture unfortunately, but it is mounted on a bit of plastic at the left bottom side of the frame:

                  alt text

                  My coolant reservoir is an old brake fluid container, nothing fancy. 'Radiator' is currently a unbranded generic Chinese 40x40mm copper waterblock attached to the aluminium frame; works well enough and saves another fan.

                  1 Reply Last reply Reply Quote 0
                  • tech-ratonundefined
                    tech-raton @fma
                    last edited by tech-raton

                    @fma

                    For my delta, i use:

                    https://www.amazon.fr/dp/B00VHPADRW/ref=cm_sw_r_cp_apa_i_9IBeEbVMHC36G

                    For my corexy, i use:

                    This one

                    The main problem with these pump are the diameter of the hoses. You will need some adapters.

                    1 Reply Last reply Reply Quote 0
                    • fmaundefined
                      fma
                      last edited by

                      Thanks for links. These pumps with integrated tanks are easier to install.

                      Do you know if the Yosoo has a brushless motor, like the SC-300T? Is it possible to under-volt them, to slow them down?

                      Frédéric

                      tech-ratonundefined 1 Reply Last reply Reply Quote 0
                      • tech-ratonundefined
                        tech-raton @fma
                        last edited by

                        @fma i connected them on the fan connectors. I use the pwm at 60% and both pumps work great. But i can't tell if the motor is brushed or brushless

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                        • fmaundefined
                          fma
                          last edited by

                          Thanks! The SC-300T is brushless, as written on the pump body.

                          Frédéric

                          1 Reply Last reply Reply Quote 0
                          • piperswundefined
                            pipersw
                            last edited by

                            For the SC-300T, what is the operating temperature ?
                            I didn't find it.

                            1 Reply Last reply Reply Quote 0
                            • laelundefined
                              lael @Nuramori
                              last edited by

                              @nuramori Where did you source your self-sealing valves you've got installed on your liquid lines? They look like they would be quite helpful if you ever needed to do hotend maintenance etc.

                              deckingmanundefined Nuramoriundefined 2 Replies Last reply Reply Quote 0
                              • laelundefined
                                lael @tech-raton
                                last edited by

                                @tech-raton I noticed it looks like you are running a silicone hose over some ptfe / similar tube into the quick disconnect fittings. Have you had any leakages or spills from the overlapping union?

                                tech-ratonundefined 1 Reply Last reply Reply Quote 0
                                • o_lampeundefined
                                  o_lampe
                                  last edited by o_lampe

                                  Re: watercooled hotends. One of the most simple design is this. Not sure if it was long term tested, but quite inspiriring.
                                  Zatsit delta

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

                                    @lael The self sealing valves look like these https://www.ebay.co.uk/itm/174905154309?hash=item28b928db05:g:KZkAAOSwv91hI4tk. I bought the 6mm version but be warned, one of them leaked!!

                                    I also had some leaks after attaching silicone hose to rigid "non barbed" tubing so I use clips (the spring type).

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

                                    laelundefined 1 Reply Last reply Reply Quote 1
                                    • Nxt-1undefined
                                      Nxt-1
                                      last edited by

                                      If you are looking for high quality quick disconnects I can highly recommend the ones from Koolance. Being full metal, they are quite heavy which might be an important factor for some. They also are not exactly cheap but they do work wonders, have disconnect leakage in the order of a couple little drops and have never failed me.

                                      I have a set of QD3 series in my machine but they do offer others as well. https://koolance.com/help-quick-disconnect-shutoff-couplings

                                      Duet3D and delta printer enthousiast. Buildlog
                                      Looking for Duet3D configuration support, check out Nxt-3D

                                      deckingmanundefined laelundefined 2 Replies Last reply Reply Quote 1
                                      • deckingmanundefined
                                        deckingman @Nxt-1
                                        last edited by

                                        @nxt-1 Thanks for the recommendation - I'll take a look at them.

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

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                                        • GeneRisiundefined
                                          GeneRisi @Nuramori
                                          last edited by

                                          @nuramori Really nice setup! Is the Nimble a sidewinder or a V3 ?

                                          Nuramoriundefined 1 Reply Last reply Reply Quote 0
                                          • Nuramoriundefined
                                            Nuramori @lael
                                            last edited by

                                            @lael said in Pictures of water-cooling:

                                            @nuramori Where did you source your self-sealing valves you've got installed on your liquid lines? They look like they would be quite helpful if you ever needed to do hotend maintenance etc.

                                            They are Colder medical quick disconnects that are dripless.

                                            PLCD16006 Quick-Disconnect Panel-Mount Hose Barb Fitting Body; Valved, 3/8" Tube ID, Acetal

                                            laelundefined 1 Reply Last reply Reply Quote 0
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