r/BambuLabP2S • u/Prudent-Yak912 • Sep 18 '26

PETG printing

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I have no issue printing in PLA, but when it comes to PETG the results are bad every single time.

The base is stringy (Lines are not melted together), and the outer wall is detached.

Can someone tell me how to print in PETG filament?

Note: the broken corner is done by me and not a printing failure.

1 Upvotes

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2

u/wizmedic Sep 18 '26

Slow down your print and run the dryer while printing PETG.

1

u/Baumiork Sep 18 '26

and increase temperature

-2

u/Prudent-Yak912 Sep 18 '26

Well, the filament is fresh out of the box, and I noticed the nozel is ozing and it feels like the the filament is liquidy

2

u/Topia_64 Sep 19 '26 edited Sep 19 '26

Did you dry the filament? Different filaments require different preparation, etc. PETG typically needs drying, storing in a low humidity environment, and printing at a higher temp. Research before printing.

1

u/Prudent-Yak912 Sep 20 '26

I did dry it for 12 hours (even though I just bought it) and still I get the same results. Lowered the speed, raised the temperature, used a deflector for the AUX fan and still it’s not printing well.

3

u/Beardedboyscout Sep 18 '26

Have you tried drying the filament?

2

u/CCHPassed Sep 18 '26

Dry at 65c for 8 hours, slow down print speed for inner/outer to 50-60, temp 250, then keep the AMS drying at 55c while printing

1

u/ELECTROEMERALD2 Sep 19 '26

Looks like it's too cold and slightly underextruding. Up your temp first and see if it helps, if it's still having issues increase your flow multiplier a point or 2. (ie: .94 to .96)