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    using mosquito hotend in heated chamber

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    • davidvh86undefined
      davidvh86
      last edited by

      Anyone using a mosquito hot end in a heated chamber with air cooling, im getting clogs and under extrusion about 3/4 the way through a benchy test prints. The only material that prints without an issue is polymaker polycarbonate, probably due to its high glass transition temp.

      sebkritikelundefined 1 Reply Last reply Reply Quote 0
      • whopping pochardundefined
        whopping pochard
        last edited by

        Not currently but was thinking about trying it down the line. What are your retraction settings? I had to dial way down on my direct drive BMG setup (0.2-0.4 mm) to deal with the heat creep.

        davidvh86undefined 1 Reply Last reply Reply Quote 0
        • sebkritikelundefined
          sebkritikel @davidvh86
          last edited by

          @davidvh86 said in using mosquito hotend in heated chamber:

          Anyone using a mosquito hot end in a heated chamber with air cooling, im getting clogs and under extrusion about 3/4 the way through a benchy test prints. The only material that prints without an issue is polymaker polycarbonate, probably due to its high glass transition temp.

          How hot of a chamber? Do you also have a heated build plate (or does the build plate drive the chamber temperature)? What material at what temperature?

          Stock fan or other fan?

          Depending on your extruder setup, you may actually be having issues at the drive gears due to the chamber temperature (from personal experience).

          Large(ish?) IDEX - 6HC, 1HCL
          Stratasys Dimension 1200es to 6HC Conversion

          davidvh86undefined 1 Reply Last reply Reply Quote 0
          • davidvh86undefined
            davidvh86 @whopping pochard
            last edited by

            @whopping-pochard
            started at 1 mm went to .9 at 30mms

            sebkritikelundefined 1 Reply Last reply Reply Quote 0
            • davidvh86undefined
              davidvh86 @sebkritikel
              last edited by

              @sebkritikel said in using mosquito hotend in heated chamber:

              o you also have a heated build plate (or does the build plate drive the chamber temperature)? What material at what temperature?
              Stock fan or other fan?

              yea stock fan with an independent chamber heater and bed.
              Heated chamber at 60 c for abs 250c hotend. heated chamber at 30c and 240 hotend for petg.

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              • sebkritikelundefined
                sebkritikel @davidvh86
                last edited by

                @davidvh86 said in using mosquito hotend in heated chamber:

                @whopping-pochard
                started at 1 mm went to .9 at 30mms

                Seems crazy high to me, unless you're using a bowden extruder. I keep mine less than .5, but with a direct drive (BMG) setup.

                Temperatures look fine for ABS, although I run ABS closer to 300°C (habits from a Stratasys machine running MG94 high-melt flow ABS).

                Large(ish?) IDEX - 6HC, 1HCL
                Stratasys Dimension 1200es to 6HC Conversion

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                • oozeBotundefined
                  oozeBot
                  last edited by oozeBot

                  We are using the Slice Magnum in a heated chamber at 70c for ABS. It is air-cooled with no recognizable heat creep. We just recently completed this large scale test in ABS with a 1.2mm nozzle with no supports. Extrusion width was 1.8mm and layer height was .4mm. It is 300mm deep x 264mm wide x 244mm high, was printed in ~17 hours, and weighs right at 3.5lbs.

                  edit - what I wrote is a bit misleading. Most ABS parts are done with a chamber temp at 70c. Due to the overhangs on this print, we reduced the chamber temp to around 50c.

                  cthulhu1.jpg

                  davidvh86undefined 1 Reply Last reply Reply Quote 0
                  • davidvh86undefined
                    davidvh86
                    last edited by

                    I found the problem, the brass insert failed for the extruder, so the arm wasn't holding tension.

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                    • davidvh86undefined
                      davidvh86 @oozeBot
                      last edited by

                      @oozeBot
                      IS that a core xy printer?

                      oozeBotundefined 1 Reply Last reply Reply Quote 0
                      • oozeBotundefined
                        oozeBot @davidvh86
                        last edited by

                        @davidvh86 you can read more about it here:

                        https://forum.duet3d.com/topic/18485/oozebot-ele-gant

                        Thanks

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