Uneven extrusion can come from diameter variation, feeder tension, partial clog, moisture or pressure settings. Measure flow and inspect the feeder before changing slicer values.
Check the chain
- Diameter and spool winding.
- Feeder grip and path.
- Nozzle condition.
- Temperature stability.
Measure flow
Print a single wall and compare multiple positions. Change one variable at a time and verify edges and small features.
Confirm
- Wall width.
- Dimensions.
- Long run.
| Symptom | Cause | Action |
|---|---|---|
| Thin wall | Feeder/diameter | Inspect |
| Gaps | Under-extrusion | Calibrate |
| Pulsing | Winding | New spool |
| Random | Moisture | Dry |
Common engineering mistakes
- Changing flow first.
- Ignoring winding.
- One measurement.
- Multiple variables.
- Short test only.
Buyer checklist
- Is diameter stable?
- Is feeder tension correct?
- Is nozzle clean?
- Is material dry?
- Is the wall repeatable?
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