This is PETG, one was left out in about 40% humidity the other was dried to about 20%

  • hddsx@lemmy.ca
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    13 days ago

    As someone who happened upon this and doesn’t know anything about 3D printing, why? Does the moisture make the ink(?) print poorly?

    • Badabinski@kbin.earth
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      13 days ago

      When the filament goes through the hotend, any moisture in the filament will boil and make the filament all bubbly and not extrude well.

      • hddsx@lemmy.ca
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        13 days ago

        Do you ever mix two filaments for color fun? If so, do they have to have same moisture content

        • cecilkorik@lemmy.ca
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          13 days ago

          You can get multicolor filaments but probably not “mixed” in the way you’re imagining, like multicolor toothpaste as soon as you start using that, it would just mush into one combined color (and you probably could’ve just bought a nicer version of whatever color it combined into anyway).

          Instead color is usually mixed along the length of the filament, gradually shifting color as layer after layer comes out, creating a multi-color gradient effect in the print. So-called “fast change” filaments change color quite quickly, transitioning to a new color as quickly as every few layers resulting in a “striped” appearance. “Slow change” filaments change more gradually, usually resulting in at most a two-tone or three-tone gradient except across very large/tall prints.

          Filament changing for multi-color prints is also an option but requires either a complex and somewhat unwieldy filament unloading, switching and feeding apparatus or a tool-switcher or dual-extruders or other similarly advanced printer features.

    • Typotyper@sh.itjust.works
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      13 days ago

      Yes. Stringy. Some filament types such as TPU are more sensitive to moisture. Dryers take around 7 hours to dry a role. If you had a way to know the moisture content I assume you could shorten that time. Again different filament types dry at different rates.

      • AnyOldName3@lemmy.world
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        12 days ago

        You can weigh it before you start drying it and weigh it again every few hours until it stops getting lighter.

    • Heydo@lemmy.world
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      11 days ago

      I mean, it’s quite obvious from the pic.

      The colors are totally different.

      /s