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    Watercooled Smart Effector In Larger Effector || 4th Axis Design

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    Smart effector for delta printers
    smart effector mounting effector water cooling 4th axis delta additional axis
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    • denkeundefined
      denke
      last edited by

      @Nxt-1

      This is a cool idea, so I'm really hoping to be wrong ... But I have some questions:

      • How much extra weight does this add?
      • If I see it correctly you grinded down the radiator to be square, and added the blocks to the sides you got this way. But, for me it seems that this adds a distance between the heatbreak and the heater block which are only about 50% connected to the system (the original radiator is not solid)

      I have seen an idea somewhere earlyer, when someone printed a large tube around the radiator, sealed the upper and lower most ring of the radiator to it, and circulated the water in this tube making the original radiator the inner part of the water block. This way seems better because:

      • All extra parts are printable
      • It seems to be lighter
      • The water is closer to the heat source and also has a larger contact surfice

      Again, the idea is great, and I really hope that I'm wrong and your approach works flawlessly!!

      Nxt-1undefined 1 Reply Last reply Reply Quote 0
      • Nxt-1undefined
        Nxt-1 @denke
        last edited by

        @denke said in Mounting a smart effector in larger effector - watercooled:

        @Nxt-1

        This is a cool idea, so I'm really hoping to be wrong ... But I have some questions:

        • How much extra weight does this add?
        • If I see it correctly you grinded down the radiator to be square, and added the blocks to the sides you got this way. But, for me it seems that this adds a distance between the heatbreak and the heater block which are only about 50% connected to the system (the original radiator is not solid)

        I have seen an idea somewhere earlyer, when someone printed a large tube around the radiator, sealed the upper and lower most ring of the radiator to it, and circulated the water in this tube making the original radiator the inner part of the water block. This way seems better because:

        • All extra parts are printable
        • It seems to be lighter
        • The water is closer to the heat source and also has a larger contact surfice

        Again, the idea is great, and I really hope that I'm wrong and your approach works flawlessly!!

        • I plan to weigh the complete hotend once it is all finished up.

        • The original radiator was indeed ground down to be squarish. And you are right this is not optimal in terms of contact surface.

        • I have seen a couple of designs like the one you mention. The main problem with a printed heat block/sleeve is leaks. I am fairly certain my current plan will not leak at all. With a printed sleeve, you always have the issue of making it water tight. I might experiment with it in the future though.

        I think all your points are quite valid. I am just experimenting around for now I guess.

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

        denkeundefined 1 Reply Last reply Reply Quote 0
        • denkeundefined
          denke @Nxt-1
          last edited by

          @nxt-1
          Thanx for explaining your reasoning, please let me know how it goes!

          1 Reply Last reply Reply Quote 0
          • crynoolundefined
            crynool
            last edited by crynool

            Ever thought about putting all the hardware on top, just the tubes running down, so more clearance around the nozzle, using the 3 holes around the centerhole for mounting the hardware, keeping the balls at the designated spots?

            In theory, you can also use this then to add a direct drive instead of using a bowden

            Nxt-1undefined 1 Reply Last reply Reply Quote 0
            • oliofundefined
              oliof
              last edited by

              @denke I believe you remember https://well-engineered.net/index.php/en/86-community-water-cooling

              I do have the water cooling block at home, but it is waiting for a later time when I finished off my current ones.

              <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

              Nxt-1undefined 1 Reply Last reply Reply Quote 0
              • Nxt-1undefined
                Nxt-1 @crynool
                last edited by

                @crynool said in Mounting a smart effector in larger effector - watercooled:

                Ever thought about putting all the hardware on top, just the tubes running down, so more clearance around the nozzle, using the 3 holes around the centerhole for mounting the hardware, keeping the balls at the designated spots?

                In theory, you can also use this then to add a direct drive instead of using a bowden

                I do not see how moving the two black water splitter block up will increase clearance around the nozzle, please elaborate. As far I know, the 3 holes around the center hole are not a good spot for mounting anything with any mass. These holes are just about in the strain gauge area of the board and will influence measurements if constrained. Furthermore, I am not using the usual mag ball's so I cannot keep the balls at the usual spots even if I wanted to.

                A direct drive can be added to this whether or not I move things around (it would be harder with more stuff moved upwards actually). I have printed with a direct drive Bondtech BMG mounted on a custom effector I designed for over a year I believe. While the direct-y-ness is a bliss, the added mass is not at all. The BMG+(pancake)stepper add quite a bit of weight to the moving effector, resulting a significant ringing at corners in the print.

                Recently I have moved the extruder to a separate 4th axis, Leaving me with a lighter effector and shortish bowden tube (170mm I believe).

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

                Twigzundefined 1 Reply Last reply Reply Quote 0
                • Nxt-1undefined
                  Nxt-1 @oliof
                  last edited by

                  @oliof said in Mounting a smart effector in larger effector - watercooled:

                  @denke I believe you remember https://well-engineered.net/index.php/en/86-community-water-cooling

                  I do have the water cooling block at home, but it is waiting for a later time when I finished off my current ones.

                  I that block was available with a M12 threaded mount instead of a groove mount, I would throw my ideas in the bin right way most likely 😉 I sadly do not have access to metal shaping machines to make my own either.

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

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                  • Dougal1957undefined
                    Dougal1957
                    last edited by

                    Sorry to put a dampener on your work but I don't think it will work, With the feed tube/blocks where they are I don't think you will have anywhere near enough clearance for the arms so your print radius is going to be severely limited and should you go beyond that limit you are likely to get an arm disconnection. I hope I am wrong but I would attempt to mount it and see before you go much farther. Also you might like to Check out the Zesty Kryo

                    Nxt-1undefined 1 Reply Last reply Reply Quote 0
                    • Nxt-1undefined
                      Nxt-1 @Dougal1957
                      last edited by

                      @dougal1957 said in Mounting a smart effector in larger effector - watercooled:

                      Sorry to put a dampener on your work but I don't think it will work, With the feed tube/blocks where they are I don't think you will have anywhere near enough clearance for the arms so your print radius is going to be severely limited and should you go beyond that limit you are likely to get an arm disconnection. I hope I am wrong but I would attempt to mount it and see before you go much farther. Also you might like to Check out the Zesty Kryo

                      No worries about damping 🙂 , I have been thinking the same about clearance. In the current design, I have placed the ball joint connections at close to the edge of the smart effector pcb as I physically possible. If clearance issues arise, I can move them outwards or increase the spacing between the rods.

                      On terms of the Zesty Kryo, holy crap. That seems just about what I was looking for. I have to interest into getting the rest of the Nimble ecosystem but I will definitely look at the Kryo. One issue, did Zesty discontinue the Kryo. I cannot find a source for it.

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

                      Nxt-1undefined 1 Reply Last reply Reply Quote 0
                      • oliofundefined
                        oliof
                        last edited by

                        Also, check out https://hackaday.io/project/158650-folds-and-hinges-technology-to-make-mechanisms/log/147838-ultra-light-extrusion-toward-the-graal for a very interesting and simple water cooling design.

                        <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

                        Nxt-1undefined 1 Reply Last reply Reply Quote 0
                        • Nxt-1undefined
                          Nxt-1 @oliof
                          last edited by

                          @oliof said in Mounting a smart effector in larger effector - watercooled:

                          Also, check out https://hackaday.io/project/158650-folds-and-hinges-technology-to-make-mechanisms/log/147838-ultra-light-extrusion-toward-the-graal for a very interesting and simple water cooling design.

                          I saw that design when they released it but I do not think it is direct compatible with the E3D ecosystem that I use. Futhermore, it does not seem to be a likely fit for a smart effector.

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

                          oliofundefined 1 Reply Last reply Reply Quote 0
                          • oliofundefined
                            oliof @Nxt-1
                            last edited by

                            @nxt-1 agreed on the extruder and it definitely is not a simple E3D drop-in. That said, the hotend/cooling part might fit. I heard mixed opinions on the ceramic heater with the thermistor in the nozzle though ...

                            <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

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                            • Twigzundefined
                              Twigz @Nxt-1
                              last edited by

                              This post is deleted!
                              1 Reply Last reply Reply Quote 0
                              • Nxt-1undefined
                                Nxt-1 @Nxt-1
                                last edited by

                                @nxt-1 said in Mounting a smart effector in larger effector - watercooled:

                                @dougal1957 said in Mounting a smart effector in larger effector - watercooled:

                                Sorry to put a dampener on your work but I don't think it will work, With the feed tube/blocks where they are I don't think you will have anywhere near enough clearance for the arms so your print radius is going to be severely limited and should you go beyond that limit you are likely to get an arm disconnection. I hope I am wrong but I would attempt to mount it and see before you go much farther. Also you might like to Check out the Zesty Kryo

                                No worries about damping 🙂 , I have been thinking the same about clearance. In the current design, I have placed the ball joint connections at close to the edge of the smart effector pcb as I physically possible. If clearance issues arise, I can move them outwards or increase the spacing between the rods.

                                On terms of the Zesty Kryo, holy crap. That seems just about what I was looking for. I have to interest into getting the rest of the Nimble ecosystem but I will definitely look at the Kryo. One issue, did Zesty discontinue the Kryo. I cannot find a source for it.

                                Comming back to the Kryo, I just heard back from Zesty directly and it seems that some users reported leakages appearing after a while. The guys over at Zesty make the right call and pulled the Kryo from sales until they can release a re-engineered version.

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

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                                • Nxt-1undefined
                                  Nxt-1
                                  last edited by

                                  I've been continuing the work on this project. I've had a few failed print due to clogging, I assume from the heatbreak overheating. The last couple of print are doing fine however. I measured some temps with a thermocouple and the water rises to 30-35°C and the copper waterblocks themselves to around 44°C.
                                  2019-10-19 11.09.36.jpg 2019-10-19 11.09.43.jpg

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

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                                  • Nxt-1undefined
                                    Nxt-1
                                    last edited by

                                    There is also a thread concerning monitoring the water temps with a 10K thermistor here.
                                    And a thread about getting the part fan to work here.

                                    I have also decided to go full blow and mount some radiators on the 4th axis arm. Furthermore, I ordered an off-the-shelf water cooled heatsink from Germany. I plan to turn down the groovemount down to 12mm on a lathe and thread it to M12 myself. Not only is probably a better solution cooling wise but also way less tubes down at the effector. I feel the short tube in tight corners are in a way constraining the Z-probe action of a smart effector.

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

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

                                      As described in a separate thread I now use a different way of mounting (the new) water cooled heatsink. This makes tubing a lot neater and should give better performance. I will keep this thread updated with the results once I find the time to properly do some testing.

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

                                      Nxt-1undefined 1 Reply Last reply Reply Quote 0
                                      • Nxt-1undefined
                                        Nxt-1 @Nxt-1
                                        last edited by

                                        @Nxt-1 Here is a quick status update. I am currently figuring out how I am going to implement the counterweight for the 2-2.5kg that the 4th axis weighs. The current plan is to cut a stack of disk out of lead sheet, so I can stack more weights as needed.
                                        2019-11-17 10.40.09.jpg 2019-11-17 10.40.01.jpg

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

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                                        • fmaundefined
                                          fma
                                          last edited by

                                          I'm using a FNU (http://reprapuniverse.com/catalog/store.php?cPath=44_155_157), and made a water-cooled block with a simple piece of aluminium (25x25x10), and a few holes:

                                          FNU_watercooled.png

                                          It works fine. It does not require much water flow; my previous pump died, and I'm about to buy a peristaltic one.

                                          I also made a version for a E3D-v6, for friends:

                                          E3D-v6_watercooled.png

                                          but for now, nobody tried it... It requires a new thermal heat-break, which can be found on ebay (M6 thread on full-length)

                                          Frédéric

                                          Nxt-1undefined 1 Reply Last reply Reply Quote 0
                                          • Nxt-1undefined
                                            Nxt-1 @fma
                                            last edited by

                                            @fma I never heard of the FNU style nozzle/hotends, looks interesting. As for your waterblock, looks nice, clean and effective. I assume there are four fittings to avoid needing a channel machined in there and simplify the manufacturing process?

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

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