Bambu Lab A1 first layer not sticking

Where this problem appears

Bambu Lab A1 and A1 mini using textured or smooth build plates.

Symptoms to confirm

• Lines lift behind the nozzle during the first layer.
• Corners curl before the second layer starts.
• One side sticks while another side remains too high or too low.

Likely causes

• Skin oil or residue is reducing grip on the build surface.
• The selected plate or filament profile does not match the installed materials.
• The nozzle or plate temperature is unsuitable for the filament.
• Automatic bed leveling was skipped after a plate or nozzle change.

Work in order

Step-by-step fix

1. 1

   Let the plate cool, remove it and wash the print surface with warm water and plain dish soap.

2. 2

   Dry it with a clean lint-free towel and avoid touching the print area.

3. 3

   Confirm that the slicer shows the exact plate type and filament profile in use.

4. 4

   Inspect the nozzle for a small plastic blob that could affect probing height.

5. 5

   Run bed leveling and nozzle calibration with the plate installed correctly.

6. 6

   Print a simple first-layer test at the material manufacturer's recommended temperature range.

7. 7

   If only one area fails, inspect the plate for damage or debris underneath it.

If the main path does not work

• Increase plate temperature in small 5 C steps within the filament maker's safe range.
• Use a brim for narrow parts after the underlying adhesion problem is corrected.

How to reduce repeat failures

Clean the plate regularly, store filament dry and recalibrate after nozzle, build plate or hotend changes.

Common questions