What is under-extrusion and how to fix it?
Under-extrusion = the printer extrudes less filament than it should. Visible as gaps between layers, weak walls, porous surface.
Causes
- Clogged nozzle
- Low temperature
- Low flow
- Fast print
- Weak extruder
Solution
- Clean the nozzle
- Raise temperature by 5-10 °C
- Lower speed by 20 %
- Calibrate flow rate
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