How to Fix Thin Walls Breaking / Gaps in Thin Features
Step-by-step fix for thin walls breaking / gaps in thin features on Bambu Lab printers including X1C, H2D, P1S, and A1.
How do I fix thin walls breaking / gaps in thin features?
- 1
Enable Arachne wall generator. Unlike classic mode, Arachne dynamically adjusts wall width to perfectly fill thin sections without leaving gaps.
Setting:
quality.wallGenerator - 2
Use a 0.2mm nozzle for fine details. Smaller nozzles can resolve thin walls and small features that a 0.4mm nozzle simply cannot print.
Setting:
Nozzle size - 3
Slow outer wall speed to 60–80 mm/s for thin features. High speeds cause the extruder to under-extrude on small, quick direction changes.
Pro tip: Select "High Print Resolution" above — it enables Arachne and recommends finer nozzle sizes for detailed geometry.
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