Easy 5-15 min PLAPETGTPUABSASA

First Layer Too Thin

The first layer is over-squished, rough, transparent, or scraped by the nozzle.

First Layer Too Thin example 1
First Layer Too Thin example 2
First Layer Too Thin example 3

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Likely causes

Z offset is too low
Raise Z offset slightly until the line is flattened but still has visible plastic volume.
Bed mesh or leveling is off
Clean the nozzle, re-run leveling, and check that the bed plate is seated correctly.
Flow is too high on the first layer
If Z height is correct but the layer is still overloaded, reduce first-layer flow a few percent.

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.