PETG is just as stringy as I was told

Comments

• BigDanishGuy@sh.itjust.works ⁨5⁩ ⁨weeks⁩ ago

  First rule of petg is “dry your filament”, second rule of petg club is “dry your filament”… Thrid rule? Nope, it’s “store your filament dry”

  Jokes aside, other things you could look at:

  • nozzle, how worn is it?
  • calibration tests: did you do a temp tower? Calibration cube? Retraction test?
  • The vertical surface doesn’t necessarily have that appearance as a result of wet filament. In my experience, wet PETG will result in more random variations than that. It looks too regular IMHO, is everything that should be tightened actually tightened?
  • have you calibrated the extruder steps?

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  • bluewing@lemm.ee ⁨4⁩ ⁨weeks⁩ ago

    I would bet on retraction here. Dial that in and 90% of the stringing goes away.

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  • SzethFriendOfNimi@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

    Fourth rule… painters tape as bed surface will save your PEI sheets and holds PETG really well.

    Or G10/Garolite

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    • bluewing@lemm.ee ⁨4⁩ ⁨weeks⁩ ago

      Or just use a textured PEI plate at the proper bed temperature. There is very little need for special adjuncts to print PETG.

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• faebudo@infosec.pub ⁨5⁩ ⁨weeks⁩ ago

  Your first step will be learning to dry it and keep it dry. I can recommend a scale that can resolve to at least 0.1g so you can measure the weight loss while drying. This will help in seeing when it’s sufficiently dry (put it in dryer and weigh it every hour) and if it took moisture again.

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  • RamblingPanda@lemmynsfw.com ⁨5⁩ ⁨weeks⁩ ago

    And the surface quality will be enhanced with dry filament.

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• spitfire@lemmy.world ⁨4⁩ ⁨weeks⁩ ago

  Have you tried drying it (even if it’s straight from the factory)?

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  • mooklepticon@lemm.ee ⁨4⁩ ⁨weeks⁩ ago

    Yep. That helped!

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• Imgonnatrythis@sh.itjust.works ⁨5⁩ ⁨weeks⁩ ago

  Honestly you are off to a pretty good start. As everyone will tell you, you need to keep this stuff really dry. If that still doesn’t work, try different settings. If that doesn’t work, try a different brand. Unlike pla that is pretty forgiving on manufacturing tolerances, I’ve seen big differences in quality with PETG. In my hands, Id consider your kitty a perfectly acceptable print. Butane torch the hairs and you’ll have a perfectly clean model

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• JigglySackles@lemmy.world ⁨4⁩ ⁨weeks⁩ ago

  I don’t have issues with it stringing, but bed adhesion is a pain in the ass.

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• IndustryStandard@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

  Looks fairly normal. You could tune retraction slightly.

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• schmaker@schmaker.eu ⁨5⁩ ⁨weeks⁩ ago

  @mooklepticon Just printing my first #PETG on #Ender

  70°C bed
  260°C nozzle on the bed
  225°C nozzle afterwards

  The difference from defaults is huge 😀

  Attachment: schmaker.eu ↗

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  • mooklepticon@lemm.ee ⁨5⁩ ⁨weeks⁩ ago

    260°C nozzle on the bed 225°C nozzle afterwards

    Wow, that’s a huge difference between 1st layer and later! I’ve never seen that big a delta.

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    • schmaker@schmaker.eu ⁨5⁩ ⁨weeks⁩ ago

      @mooklepticon
      I think my Z-offset is too high and I'm compensating it with temperature, but I don't care - nozzle cleans itself well, prints well and even structure is good.

      When it works, don't touch it 😀

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