Over-Extrusion
Easy to Fix
Too much plastic is being extruded, causing blobs, poor surface finish, and dimensional inaccuracy.
What Does It Look Like?
Bulging or rough surface
Blobs and zits on outer walls
Oozing from nozzle
Parts too large (dimensionally inaccurate)
Common Causes
Extrusion multiplier too high
Incorrect filament diameter in slicer
Temperature too high
Solutions (Try in Order)
Start with Priority 1 solutions. Make one change at a time and test between changes.
1
Decrease Extrusion Multiplier/Flow
Reduce material output
Decrease by 2-5% increments (try 95-98%)
1
Verify Filament Diameter Setting
Wrong diameter causes incorrect flow calculations
Should be 1.75mm in slicer (measure actual filament)
2
Lower Print Temperature
Cooler material is less runny
Decrease by 5-10°C
3
Calibrate E-steps
Ensure extruder moves correct amount
Extrude 100mm, measure, adjust firmware
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:
Easy
Category:
Extrusion Issues
Solutions:
4