Cosmetic Issue

How to Fix Bad Bridging Quality (Sag or Snap)

Step-by-step fix for bad bridging quality (sag or snap) on Bambu Lab printers including X1C, H2D, P1S, and A1.

How do I fix bad bridging quality (sag or snap)?

1
If bridges sag: increase bridge speed (60–80 mm/s) and reduce bridge flow (85–95%). Faster travel stretches the filament taut while lower flow prevents excess material from drooping.
Setting: Bridge speed/flow
2
If bridges snap or are pulled off: slow bridge speed to 30–40 mm/s and enable "Thick bridges". The filament needs more time to adhere to anchor points on each side.
Setting: Bridge speed/flow
3
Maximize part cooling fan to 100% during bridging and lower nozzle temp by 5–10°C. Rapid cooling solidifies the filament mid-air before it has time to droop.
Setting: Cooling fan

Pro tip: Select "Good Cosmetics" above — it optimizes support and overhang settings that also improve bridging quality on unsupported spans.

Related Print Issues

Uneven First Layer Stringing / Oozing Visible Layer Lines Elephant Foot (First Layer Bulge)Warping / Curling / Lifting

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