ExtrudoWhy is my 3D print petg stringing and oozing?
Petg stringing and oozing is usually caused by petg is naturally stringier than pla and needs more aggressive retraction and slightly lower temperatures to control it. PETG leaves noticeably more strings and blobs than other filaments, even with normal settings
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Quick reference
| Defect | Most likely cause | First thing to try |
|---|---|---|
| PETG stringing and oozing | PETG is naturally stringier than PLA and needs more aggressive retraction and slightly lower temperatures to control it | Increase retraction distance further |
What it looks like
PETG leaves noticeably more strings and blobs than other filaments, even with normal settings
Most likely cause
PETG is naturally stringier than PLA and needs more aggressive retraction and slightly lower temperatures to control it
How do I fix petg stringing and oozing? Step-by-step
- 1
Increase retraction distance further
PETG often needs 1-2mm more retraction distance than PLA — increase gradually and test.
Done when: Fewer strings between separated parts
- 2
Lower nozzle temperature
Print 5-10°C cooler within PETG's recommended range (usually 230-250°C) to reduce oozing.
Done when: Strings reduced without losing layer bonding
- 3
Reduce printing speed slightly
Slow down travel moves specifically — PETG oozes more when moving fast right after extruding.
Done when: Cleaner travel moves with less residue
Frequently asked
What causes petg stringing and oozing in 3D prints?
PETG is naturally stringier than PLA and needs more aggressive retraction and slightly lower temperatures to control it
How do I fix petg stringing and oozing on my printer?
Follow the step-by-step fix above, starting with "Increase retraction distance further". Each step includes a "done when" check so you know whether it worked before moving on.
Is this fix confirmed by other makers?
This entry is part of Extrudo's seeded defect library. Confirmation counts appear once real users report the fix worked.
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