✅ - Cracks in 3d print when using PETG? | Frankly Built's 3D Printing & Cosplay Community | Page 1

quartz prairie Sep 30, 2025, 5:04 AM

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I'm using a Bambu labs A1 on the standard 0.4 nozzle. The filament is Sunlu petg. As you can see there are cracks on the print. I don't know why.

broken jacinthBOT Sep 30, 2025, 5:04 AM

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tame barn Sep 30, 2025, 5:26 AM

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You sure there are cracks? Those looks like the filament wasnt dryed out and you got bubbles (which is common for petg...it really needs to be ideally dried/run through a dehydrator)

quartz prairie Sep 30, 2025, 5:29 AM

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Yeah I don't have a dryer

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I'm new to working with petg. I guess i need one

tame barn Sep 30, 2025, 5:32 AM

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For petg, yea that would be good idea normally, especially depending on the humidy of the area you are in + how you store the filament

quartz prairie Sep 30, 2025, 5:34 AM

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Luckily it didn't get humid to the point of being sticky but I guess it can still be dryer

tame barn Sep 30, 2025, 5:36 AM

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Petg is very hydroscopic..so if you are storing it openly it humid temps..then yea thats going to happen.

quartz prairie Sep 30, 2025, 5:36 AM

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yeah I don't think it's bad to store it like this but drying it would help before use

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but this was the first print right after opening it so idk

tame barn Sep 30, 2025, 5:39 AM

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Using petg right on open is kinda a crapshoot, at least in my experience...not all brands dry and seal right away..or even dry it to my knowledge.

quartz prairie Sep 30, 2025, 5:40 AM

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I mean i guess either way I'd have to dry it eventually

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do you have to dry TPU and PLA too?

tame barn Sep 30, 2025, 5:42 AM

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Not sure about TPU, Im still experimenting with it.

PLA -shouldnt- need drying unless you live in a crazy humid env and have left it sitting out to soak for years. But ymmv

broken jacinthBOT Sep 30, 2025, 6:22 AM

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broken jacinth > Hey <@155943002525663232>, thank you for contributing to this forum. > Please...

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#✅ - Cracks in 3d print when using PETG?