MediumExtrusionDetailed Fix
Under-Extrusion and Gaps Fix Guide
Fix missing lines, gaps in top layers, weak walls, clicking extruders, and intermittent extrusion by checking the nozzle, filament path, flow, temperature, and slicer profile.
Symptoms
- Missing lines or gaps
- Top layers not closing
- Extruder clicking or grinding
- Thin weak walls
- Intermittent flow during print
Likely causes
- Partial clog
- Low nozzle temperature
- Filament path drag
- Extruder tension issue
- Flow set too low
Fast checks before changing settings
- Use Nozzle Clog Flowchart
- Inspect spool movement and filament path
- Raise temperature only within material range
- Check extruder gear debris
- Compare a basic profile
Safe fix path
- Confirm flow manually
- Clear or replace nozzle if needed
- Check filament path
- Run a baseline profile
- Save maintenance note
Related tools and next steps
Matched next step
Turn the failure into a repeatable repair.
Continue the diagnosis, save the repair settings that worked, and explore the Characters & Creatures collection that includes Failed Print Gremlin.