lmarkie74
Posts: 3
Joined: Mon Oct 25, 2021 3:18 pm

PETG Printing

Where are these snot balls coming from and how do I get rid of them?
airscapes
Posts: 397
Joined: Tue Mar 06, 2018 10:35 am
Location: Philadelphia PA Area

Re: PETG Printing

lmarkie74 wrote: Wed Aug 31, 2022 2:47 pm Where are these snot balls coming from and how do I get rid of them?
Sinus, blow your nose!
Never had snot balls on my print jobs, just in my nose.
gwhite
Posts: 246
Joined: Wed Jul 19, 2017 9:37 am

Re: PETG Printing

lmarkie74 wrote: Wed Aug 31, 2022 2:47 pm Where are these snot balls coming from and how do I get rid of them?
I believe the technical term is "zits"... It tends to be worse with PETG than PLA.

Check out the trouble shooting guide: https://www.simplify3d.com/support/prin ... -and-zits/

Basically, you need to adjust your retraction settings. Different brands of filament, different temperatures, etc. can all require fine tuning things to get the cleanest possible prints.
EchoAlpha
Posts: 6
Joined: Tue Jun 16, 2020 10:23 am
Location: Near Chicago

Re: PETG Printing

Hard to say without pictures. In my experience, PETG doesn't handle over-extrusion well, so it is better to err on the side of under-extrusion.
wirlybird
Posts: 1330
Joined: Sun Jul 17, 2016 1:32 pm

Re: PETG Printing

If you mean that filament collects on the nozzle tip then that is a sign that you might be over extruding a bit. This is well known issue with PETG. Drop your extrusion multiplier a tad and see how it goes.
KOPrinting
Posts: 15
Joined: Tue Mar 22, 2022 3:42 pm

Re: PETG Printing

As the other users pointed out, hard to judge without pictures. Along with the advice given above, I would just add that PET-G is pretty hygroscopic and not drying it before a print can also cause issues.

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