• rambos@lemmy.world
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    1 year ago

    Combination of line width, layer height and speed is what limits your hottend, not the nozzle size

    Wanted to reply to another comment, but its saying that language is not alliwed lol

    • ShadowRam@kbin.social
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      1 year ago

      Well, yeah… but Line Width, Layer Height and speed are functions limited by nozzle size.

      You can’t make a 0.60 layer height with a 0.4 nozzle, but you can with the 0.8 nozzle.

      Speed is a function of nozzle size, because you can’t push 200mm/s worth of plastic through a 0.1 nozzle.

      Pushing too much mass through a small nozzle creates uncontrollable back pressure.

      With a large back pressure, your ability to control flow rate and die swell because too much.

  • papalonian@kbin.social
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    1 year ago

    Larger nozzles do kick ass. I personally use my 0.6 nozzles pretty heavily. As others have mentioned though, there are definitely scenarios where you’ll really want or even need to drop to a smaller size. My printer hates trying to print PETG at higher sizes for example, maybe my hot end isn’t powerful enough.

    • Flaky_Fish69@kbin.social
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      1 year ago

      it also consumes way more filament- especially on single-wall parts or parts that have x perimeters rather than a perimeter thickness. They’re great for structural prints, and large prints that you want done quickly. For comparison, a .4mm nozzle will have a nozzle area of about 0.125 mm^2, where a 0.6mm is .28 mm^2. and .8mm is .502mm^2. More than double the extrusion width.

      like basically everything else in 3d printing, it’s all about compromise and which compromises are acceptable.

      • ShadowRam@kbin.social
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        1 year ago

        No, I don’t agree with consumes ‘way more’ filament.

        If your design calls for 1mm width wall. You’re doing two passes with a 0.4 nozzle (0.5 width x2) or one pass with a 0.8 nozzle (1 width x1)

        It’s the same plastic.

        You’ll use more plastic on the infill, but you could arguably use a lower % infill if the infill wall thickness is larger.

        So you could be using more plastic overall, but I don’t think it would qualify as ‘way more’… maybe like 10% to 20% more.

    • jtablerd@lemmy.worldOP
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      1 year ago

      Pretty simple - Microswiss metal hotend with the Minimus cooling system - 2 5015 fans and all removable with no screws, it just pops right apart and I can get to the hotend in seconds. I switched the fans to JST connectors one day I’ll do the same for the heater/thermistor with something like an xt30 for the heater. One day I’ll get around to it

  • ottk3
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    1 year ago

    Wow! That’s awesome! What additional modifications were required?

    • jtablerd@lemmy.worldOP
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      1 year ago

      as @rambos said, line width, layer height, and speed. I’m still working on getting the speed up - not that anything has failed on me just worried my hotend won’t keep up and haven’t tested max volumetric flow yet

  • CobraA1@kbin.social
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    1 year ago

    I printed some tiny but detailed board game pieces recently, I don’t think I’d get the detail I wanted with a 0.8. I also have Revo installed so I’m okay with swapping nozzles frequently.

    • ShadowRam@kbin.social
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      1 year ago

      For years now, I’ve always want to see someone try a dual nozzle setup. Same material, same filament, but two nozzles sizes.

      Small nozzle for outer perimeter at a low layer height.

      Large nozzle for inner perimeter and infill at higher layer heights.

      Maybe in the future, someone will find a way to control nozzle size dynamically.

  • Sawblade@lemmy.world
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    1 year ago

    Dang, I have .8s for all my hotends but haven’t got around to trying them. Some day though.

    Thanks for the motivation.

      • Sawblade@lemmy.world
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        1 year ago

        Yeah totally get it, going to .6 already forced me to switch to 5kg spools on my commonly used filament.

        Any troubles keeping up with extruding through a .8? Having a reason to spend money on a higher performance hot end was my main worry from using it.