Materials › PETG-CF (carbon fibre PETG)
PETG-CF (carbon fibre PETG) – Properties, Temperatures & Tips
All key properties, print settings, pros and cons and matching filaments at a glance.
Properties & print settings
- Nozzle (°C)
- 240–270
- Bed (°C)
- 60–80
- Heat resistance HDT (°C)
- 69–74
- Tensile strength (MPa)
- approx. 60 (Polymaker); flexural strength 70 (Bambu)
- Density (g/cm³)
- approx. 1.3
- Drying
- 65 °C, 8 h
- Difficulty
- easy
No enclosure needed Hardened nozzle required
What is PETG-CF (carbon fibre PETG) used for?
Stiff technical parts, brackets, jigs
+ Pros
Stiffer and more dimensionally stable than PETG, matte surface
– Cons
Hardened nozzle required, more brittle than PETG
Printing tips at a glance
- Nozzle temperature: 240–270 °C – start in the middle of the range on a new spool and fine-tune with a temperature tower.
- Bed temperature: 60–80 °C.
- An enclosure is not needed, but avoid drafts.
- Because of the abrasive filler a hardened nozzle (e.g. hardened steel) is a must – brass wears out quickly.
- Drying: 65 °C, 8 h. Wet filament shows up as crackling, stringing and rough surfaces.
Compare similar materials
| Material | Difficulty | Nozzle (°C) | Bed (°C) | Heat resistance HDT (°C) | Tensile strength (MPa) |
|---|---|---|---|---|---|
| PETG-CF (carbon fibre PETG) | 2/5 | 240–270 | 60–80 | 69–74 | approx. 60 (Polymaker); flexural strength 70 (Bambu) |
| PETG | 2/5 | 230–270 | 60–80 | 69–78 | 38–51 |
| PA-CF (carbon fibre nylon: PA6-CF, PAHT-CF, PA11-CF) | 4/5 | 260–300 | 100–120 | approx. 175–215 (Polymaker, annealed); 184–194 (Bambu) | approx. 92–109 (Polymaker); flexural strength 125–151 (Bambu) |
| PLA-CF (carbon fibre PLA) | 2/5 | 210–240 | 45–65 | 54–55 | approx. 31 (Polymaker); flexural strength 89 (Bambu) |
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Frequently asked questions
What nozzle temperature does PETG-CF (carbon fibre PETG) need?
Guideline for PETG-CF (carbon fibre PETG): 240–270 °C nozzle and 60–80 °C bed temperature. The exact values are printed on the manufacturer's spool.
How heat resistant is PETG-CF (carbon fibre PETG)?
Heat deflection temperature (HDT) is around 69–74 °C. Above that, loaded parts start to deform.
Does PETG-CF (carbon fibre PETG) need to be dried?
Recommended: 65 °C, 8 h.
Do I need an enclosure for PETG-CF (carbon fibre PETG)?
An enclosure is not needed, but avoid drafts. Because of the abrasive filler a hardened nozzle (e.g. hardened steel) is a must – brass wears out quickly.
Values are guidelines from manufacturer datasheets (Polymaker, Bambu Lab, Prusa). They may differ by manufacturer, colour and print settings.