Structural / Functional Issue

How to Fix Weak Layer Adhesion / Delamination

Step-by-step fix for weak layer adhesion / delamination on Bambu Lab printers including X1C, H2D, P1S, and A1.

How do I fix weak layer adhesion / delamination?

1
Increase nozzle temperature by 10–15°C. Higher temps improve layer-to-layer fusion — this is the single biggest factor in inter-layer bond strength.
Setting: others.nozzle.nozzleTemp
2
Reduce cooling fan speed to 50–70% (or 0% for ABS/ASA/Nylon). Excessive cooling prevents the current layer from bonding to the one below.
Setting: Cooling fan
3
Increase layer height slightly (e.g. 0.2mm to 0.24mm). Thicker layers press into the previous layer with more force, improving adhesion.
Setting: quality.layerHeight

Pro tip: Select "High Strength" above — it increases walls, infill density, and recommends Gyroid infill for maximum inter-layer bonding.

Related Print Issues

Part Breaking Along Layer Lines Poor Dimensional Accuracy Part Too Flexible / Not Stiff Enough Bed Adhesion Failure / Part Detaching Support Removal Damage / Scars

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