Poor Bridging
Medium to Fix
Filament sags or fails when printing horizontal spans between supports.
What Does It Look Like?
Sagging filament across gaps
Drooping bridges
Strings hanging down
Uneven bridge surface
Common Causes
Insufficient cooling
Print speed too slow
Temperature too high
Extrusion multiplier too high
Solutions (Try in Order)
Start with Priority 1 solutions. Make one change at a time and test between changes.
1
Maximum Cooling
Solidifies filament quickly
Fan: 100% for bridges
1
Increase Bridge Speed
Faster movement reduces sag
Bridge speed: 150-200% of normal print speed
2
Lower Print Temperature
Cooler filament solidifies faster
Decrease by 5-10°C for bridges
2
Reduce Bridge Flow
Less material = less weight to sag
Bridge flow multiplier: 90-95%
3
Orient Print to Minimize Bridges
Design or orientation change
Rotate model to reduce bridging distance
Prevention Tips
- Save working settings for each filament type
- Perform regular printer maintenance
- Keep filament dry and stored properly
- Re-level bed before important prints
- Start with manufacturer-recommended settings
At a Glance
Severity:
MEDIUM
Difficulty:
Medium
Category:
Surface Quality
Solutions:
5