First Layer Inspection Failed
Bambu Lab 3D Printer
Severity: MinorWhat Does This Error Mean?
First Layer Inspection Failed means the printer's camera and AI detected that the first layer does not look correct. The first layer may be too high, too low, or have adhesion problems. Adjust the Z-offset and check bed adhesion.
Affected Models
- Bambu Lab X1 Carbon
- Bambu Lab X1
- Bambu Lab P1S
Common Causes
- Z-offset too high — first layer not squishing onto the bed
- Z-offset too low — first layer too squished or scraping
- Bed not clean — poor adhesion causing lifted edges
- Wrong plate type selected in the slicer
- Camera false positive — first layer is actually fine
How to Fix It
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Adjust the Z-offset in the printer menu.
A good first layer should be slightly squished — not too high (round) and not too low (transparent/scraping). Adjust by -0.05mm increments until the first layer looks right.
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Clean the build plate with isopropyl alcohol.
Fingerprints and oils prevent adhesion. Wipe the plate with IPA before every print.
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Make sure the correct plate type is selected in the slicer.
Different plates (Cool Plate, Engineering Plate, High Temp Plate) need different first layer settings. Select the correct one in Bambu Studio.
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If the first layer looks fine: dismiss the warning and continue.
The AI is not perfect and sometimes gives false positives. If the first layer looks good to your eye, you can ignore the warning.
Frequently Asked Questions
Can I disable first layer inspection?
Yes. In the printer settings, you can disable the AI first layer check. But it is useful for catching problems early, especially on long prints.
How does the AI know if the first layer is bad?
The built-in camera takes a photo of the first layer and compares it to expected patterns. It looks for gaps, lifting, uneven coverage, and other signs of poor adhesion.