Nozzle temperature for filled filaments is a balance between melting the polymer, dispersing the filler and avoiding degradation. Too low creates under-extrusion and poor layer adhesion; too high can burn additives and increase stringing.
Find the working window
- Start from the supplier range
- Print a temperature tower
- Check layer strength
- Check surface and stringing
Adjust for filler loading
Higher filler content usually needs more heat and a larger nozzle, but the limit is set by the polymer and additive. Increase in 5 °C steps and change only one parameter at a time.
Watch pressure and flow
- Extrusion consistency
- Wall thickness
- Nozzle wear
- Retraction
Validate on a functional part
A temperature tower shows surface effects; a functional part reveals layer adhesion and dimensional stability. Test walls, holes and load points before production.
| Temperature | Symptom | Risk | Action |
|---|---|---|---|
| Too low | Under-extrusion | Weak layers | Increase 5 °C |
| Optimal | Stable flow | Balanced | Record setting |
| Too high | Stringing, burnt smell | Degradation | Reduce 5 °C |
| Uneven | Blobs and gaps | Pressure | Check PID |
| Too narrow | Poor repeatability | Scrap | Validate window |
Common engineering mistakes
- Judging only by surface.
- Increasing temperature and speed together.
- Ignoring nozzle wear.
- Using a temperature tower as final proof.
- Skipping drying.
Checklist
- Is the supplier range known?
- Was a temperature tower printed?
- Are layer strength and dimensions checked?
- Is the nozzle suitable?
- Was the real part validated?
Ask for a temperature window for your filled material through the quote form.