Medium 15-30 min PLAPETGTPUABSASA

Over-Extrusion

Too much plastic is deposited, causing swollen lines, rough walls, blobs, and poor dimensional accuracy.

Over-Extrusion example 1
Over-Extrusion example 2
Over-Extrusion example 3

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Likely causes

Flow rate is too high
Calibrate flow or extrusion multiplier. Reduce in 2-3 percent steps and print a small test part.
Nozzle temperature is too high
Lower temperature by 5 C steps if the material looks glossy, smeared, or blobby.
Pressure advance is not tuned
Tune pressure advance or linear advance to reduce excess material at corners and speed changes.

Recommended settings by material

MaterialNozzleBedFan
PLA 195-210 C50-60 C80-100%
PETG 230-245 C70-80 C30-60%
TPU 220-235 C40-50 C30-50%
ABS 240-260 C95-110 C0-30%
ASA 240-260 C95-110 C0-30%

Prevention tips

Change one setting at a time and reprint a small test piece.

Keep filament dry and store open spools in sealed bags or dry boxes.

Clean the build plate regularly and verify the correct slicer profile before long prints.

Related problems

StringingWarpingFirst Layer Not Sticking

Last reviewed Jun 15, 2026. Troubleshooting content is for reference only.