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    Mosquito vs water cooling

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    • deckingmanundefined
      deckingman @baird1fa
      last edited by

      @baird1fa said in Mosquito vs water cooling:

      @deckingman in your case you could cool down your stagnant hot ends when not in use. ..................

      No I can't. It's a mixing hot end - 6 inputs, single output. So only 1 heater.

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

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      • jens55undefined
        jens55
        last edited by

        Well that certainly blew up while I was sleeping .... some VERY interesting stuff though.
        deckingman, I read through your last two blog entries and saw that my issues are not that uncommon and that doing a 6 input hotend would literally drive me insane! Kudos to you for sticking with it, I wouldn't have the patience!
        There is a lot of stuff here to digest - thank you all for posting your thoughts!

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        • arhiundefined
          arhi @jens55
          last edited by

          @jens55 said in Mosquito vs water cooling:

          Does the mosquito hotend have a substantial advantage over a water cooled Chimera setup?

          • mosquito creators mentioned they have a watercooling block for mosquito already designed (it's not on the shop but you can possibly order it from them)

          • you are comparing 2 head vs 1 head hotend.

          Water-cooled chimera should IMHO have better heat creep performance than air-cooled mosquito but really, the question is what you want to achieve? Do you want to upgrade - why? What problem you are trying to solve? Do you want a "new extruder for new printer" so you are deciding to get new mosquito or new chimera? Do you need dual output? etc etc... What materials do you want to print? Enclosed or not? ABS and "hotter" (HIPS, ASA, PETG, PA ...) you can print with mosquito without any cooling (fan of course helps), so, not even a fan on the original heatsink required, if you are not in a heated chamber... If you have heated chamber any water-cooled solution is better than air-cooled solution as there's no effective cooling in the heated chamber using "local" air, and bringing "outside" air complicates things way more than introducing water.

          jens55undefined 1 Reply Last reply Reply Quote 1
          • jens55undefined
            jens55 @arhi
            last edited by

            @arhi said in Mosquito vs water cooling:

            @jens55 said in Mosquito vs water cooling:

            Does the mosquito hotend have a substantial advantage over a water cooled Chimera setup?

            • mosquito creators mentioned they have a watercooling block for mosquito already designed (it's not on the shop but you can possibly order it from them)

            • you are comparing 2 head vs 1 head hotend.

            Water-cooled chimera should IMHO have better heat creep performance than air-cooled mosquito but really, the question is what you want to achieve? Do you want to upgrade - why? What problem you are trying to solve? Do you want a "new extruder for new printer" so you are deciding to get new mosquito or new chimera? Do you need dual output? etc etc... What materials do you want to print? Enclosed or not? ABS and "hotter" (HIPS, ASA, PETG, PA ...) you can print with mosquito without any cooling (fan of course helps), so, not even a fan on the original heatsink required, if you are not in a heated chamber... If you have heated chamber any water-cooled solution is better than air-cooled solution as there's no effective cooling in the heated chamber using "local" air, and bringing "outside" air complicates things way more than introducing water.

            As mentioned in the original post, I seem to have a heat creep issue when printing two materials. I am printing PLA on one extruder and PETG on the second extruder. This is a chimera (clone) setup with two Volcano (clone) heat blocks. I can print either PLA or PETG but if I print a model with both materials then I have feeding issues when the extruder is switched ie after one extruder has set dormant for a bit.

            arhiundefined 1 Reply Last reply Reply Quote 0
            • arhiundefined
              arhi @jens55
              last edited by

              @jens55 said in Mosquito vs water cooling:

              As mentioned in the original post, I seem to have a heat creep issue when printing two materials.

              Ian has that pretty good explained on his blog and also here in this thread. The heat will travel trough the filament, not much you can do about that except push filament forward. Could be interesting to test cooling with chiller and not just room temp water if dropping heatbreak to 4-5C would change anything (make it crack or actually stop the heat creep who knows 😄 )

              This is a chimera (clone) setup with two Volcano (clone) heat blocks.

              I had a chance to compare kraken from e3d and kraken from bigtree (or it was the green.. / blue .. don't remember, but "reputable" PRC 3d printing part seller/manufacturer) and well "huuuuuuge" difference. I never saw chimera in person but I think it uses the same heatbreak as kraken right? when you plug the input hole on the heatsink and on the output of the heatbreak and try to push it in the heatsink it refuses to go in, behaves like a syringe, the fit is super precise/tight. On the other hand, the PRC one had at least half a mm play so heat transfer on the PRC ona was way worse. It can probbly be improved with some copper tape and heat greese but.. So what I'm trying to say, did you try measuring the temperatures on the heatbreaks, how cold can that heatsink keep them?

              I did some experiments back in the day when I was planning to make a multi nozzle water cooled hotend by using a "very small heater block" (actually no block at all, I machined aluminium nozzle and wrapped the glass insulated khantal wire) - this gave very small thermal mass but with a very strong heater (150W). This way a part cooling fan would cool the nozzle quickly and strong heater would heat it up super quick so you could just turn the hotend off when you stop printing. It worked "ok-ish" but I had so many issues machining it (my lathe is not very good), aluminium is not a very good material for the nozzle (the orifice was waring off even with non abrasive materials) and it was very unsafe as 150W can easily melt that aluminium nozzle if anything bad happens, and since bad things did happen (luckily I never let it alone as I did not trust it so it was always monitored) I decided not to persue that path... but something like that could be done properly. Anyways imo the only "dual material" system that works is 2 separate extruders, I seen it done in different ways, 2 separate X motors, same Y rail etc etc.. you move the idle tool out of the way, you push a little bit of filament trough every now and then, have a nice string removal when engaging and that works ... check out BCN3D for e.g. (never tried those but first google result when I looked for that type of printer with dual heads)

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              • theruttmeisterundefined
                theruttmeister @deckingman
                last edited by

                @deckingman said in Mosquito vs water cooling:

                But I still have no idea how I could join a 6 input cold block to 6 input hot block with short heat breaks sections between the two.

                I don't think there is an easy solution.
                @fma is right about the heatsink though.

                Wrote a long reply, then had an idea.

                Have the cooling channels intersect the holes for the heatbreaks, but also cut o-ring retaining features inside the heatbreak holes and use o-rings to seal top and bottom. Leave some clearance in those holes, let the water act as your thermal interface. At that point your heatsink is mostly to just keep the water in.
                You are already CNC'ing the parts, an internal o-ring groove isn't a big jump and the right size o-ring should give you a watertight seal. Assembly might be a pain, but it might work.
                Might want to double up the o-rings for safeties sake...

                Isolate, substitute, verify.

                deckingmanundefined 1 Reply Last reply Reply Quote 0
                • jens55undefined
                  jens55
                  last edited by

                  I am doing testing this morning and the heatsink (chimera clone) is hovering around 40C with both extruders running. This is looking pretty good to me. I am currently running a test model that alternates between materials and I have not run into my previous issue.
                  The issue before was that a single material was running for about 45 minutes before the second material came into play .... but thinking about it, it shouldn't (in theory) have caused issues because the standby temperature was pretty low.
                  I also have a lot of material extruded during the time when one extruder goes to standby and the other extruder warms up (the 0.4 mm nozzle extrudes a string about 100 mm long !!!). I have yet to come up with a good way of getting that crap out of the way. In any which case, I do an extra prime with a nozzle switch to replenish this material and this was the point when the system had issues. This morning I reduced the feed speed from 15 mm/sec to 5 mm/sec during this extra prime phase and there is a good possibility that the speed caused the extruder to wear a divot into the filament and then subsequently not feed right.
                  So far my test print is running fine and I am feeling optimistic about things.

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                  • mwolterundefined
                    mwolter
                    last edited by

                    I've been using Mosquito's for about a year and have also been lucky enough to purchase a Mosquito Magnum Liquid and can offer some experience with heat creep with regard to the OP's question.

                    First, yes the Mosquito does have less heat creep than a typical v6 heat break. So much less, that the small fan provided with the Mosquito combo is sufficient when not in a heated enclosure. My enclosure is only 65c and I was having severe consistency and clogging issues with the OEM fan. I've tried 40mm fans which are still not enough. I believe the Mosquito design relies heavily on the ambient temperature for cooling and the cooling fins are not large enough when a mosquito is used in an enclosure.

                    That being said, they have changed the cooling fins (available on their site now) on the heat break. Not sure how the updated design works as I have the original version.

                    My current project is to test the Mosquito Magnum Liquid. I think this will be perfect for use in my enclosure and should resolve the occasional inconsistencies and clogs. I've never designed a cooling loop so learning about galvanic corrosion, reservoirs, fittings, fluid types, flushing, and all that. Eventually, the cooling loop will be expanded or a second loop added to cool the steppers. Should be a fun project and hopefully help improve consistency.

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                    • jens55undefined
                      jens55
                      last edited by

                      The Mosquito Magnum Liquid sounds like a wonderful addition! As I eventually want to go with a heated enclosure, I will look into this water cooled version.

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                      • deckingmanundefined
                        deckingman @theruttmeister
                        last edited by

                        @theruttmeister said in Mosquito vs water cooling:

                        ...............You are already CNC'ing the parts......................

                        No I'm not. My small milling machine and lathe are completely manual (but fitted with DROs). I have to produce 2D dimensioned drawings on paper for everything I make.

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

                        theruttmeisterundefined 1 Reply Last reply Reply Quote 0
                        • theruttmeisterundefined
                          theruttmeister @deckingman
                          last edited by

                          @deckingman

                          Ah.
                          O-ring recesses in a hole is going to be a bit difficult then... maybe a press-fit plastic seal might be possible though.

                          Isolate, substitute, verify.

                          arhiundefined 1 Reply Last reply Reply Quote 0
                          • arhiundefined
                            arhi @theruttmeister
                            last edited by

                            @theruttmeister how about some (silicone) glue instead of o-rings to make it water tight?

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                            • tech-ratonundefined
                              tech-raton
                              last edited by tech-raton

                              In an enclosure, a watercooling is the best solution for me. A chimera might very large for a single extruder. I drilled some blocks of aluminium used with the e3d heatbreak.
                              No more heatcreap with a very small block 15936391776921731898753787276774.jpg

                              15936392269301246707830868041104.jpg

                              All the parts in the watercooling are in aluminium
                              The first block had a thermistor in it and the mesured temperature remains at 27deg in a 60deg enclosure.
                              These blocks were made with a drill.

                              jens55undefined 1 Reply Last reply Reply Quote 0
                              • jens55undefined
                                jens55 @tech-raton
                                last edited by

                                @tech-raton I am having a bit of a problem visualizing what you have done there. I see the heater and you say you use the E3D heat break so I am assuming that the heat break screws into your cooling block ? I am not sure what the red thing is in the square aluminum tube. How does the filament get guided to the heat break during a filament change ? What is the path of the coolant in that block - is it simply a blind hole at the entrance and exit with a cross drilled path connecting the two blind holes that is then plugged with the bolt shown in the middle of the block side ?

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

                                  Here is what I planned to do for a friend:

                                  Capture d’écran_2020-07-02_06-04-14.png

                                  The heatbreak is not the standard one, it is a full M6 thread, instead of the standard M6/M7 one.

                                  Frédéric

                                  jens55undefined tech-ratonundefined 2 Replies Last reply Reply Quote 0
                                  • fmaundefined
                                    fma @jens55
                                    last edited by

                                    @jens55 said in Mosquito vs water cooling:

                                    @tech-raton I am not sure what the red thing is in the square aluminum tube.

                                    A remote extruder, I think.

                                    @tech-raton, what is the hotend, on the delta? I like round the heat block... Is it a piezo, above the water cooling block?

                                    Frédéric

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                                    • jens55undefined
                                      jens55 @fma
                                      last edited by

                                      @fma said in Mosquito vs water cooling:

                                      Herre is what I planned to do for a friend:

                                      Capture d’écran_2020-07-02_06-04-14.png

                                      The heatbreak is not the standard one, it is a full M6 thread, instead of the standard M6/M7 one.

                                      OK so the water cooling block is a straight through drill and then a loop on the far side back into the cooler ? The ptfe tube goes straight to the heat break ? I assume the top thing is the ptfe coupling ?

                                      Is the nut captive somehow in the assembly ? How ?

                                      Sorry about all the questions ....

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

                                        Yup the red thing is a remote extruder.

                                        The watercooling on the corexy is just a 8mm aluminium part with 7 holes drilled
                                        A m7 for the heatbreak
                                        2 m5 for the pushfits
                                        A m4 to connect the 2 m5 holes
                                        3 m3 holes to attach on the carriage

                                        On the delta, the hotend is a maxiwatt with a homemade silicon sock
                                        And yes with a piezo as z probe

                                        Why you heat

                                        fmaundefined 2 Replies Last reply Reply Quote 0
                                        • jens55undefined
                                          jens55
                                          last edited by

                                          Thanks for the clarification!

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

                                            @fma

                                            Why have 4 pushfits?

                                            You could make a u shape inside your watercooling.
                                            It will reduce the flow but will increase the heat exchange.

                                            fmaundefined 1 Reply Last reply Reply Quote 0
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