Carbon fiber reinforced PETG offers better strength and stiffness than plain PETG with reduced stringing. The carbon fiber filler improves dimensional accuracy and produces a clean matte surface. Needs a hardened nozzle due to abrasive fiber content.
Properties
- Strength — Higher tensile strength and stiffness than standard PETG
- Reduced Stringing — Carbon fiber filler decreases oozing and stringing
- Heat Resistance — Better heat deflection than plain PETG (~80°C)
- Surface Finish — Professional matte black appearance
- Abrasiveness — Requires hardened steel or ruby nozzle
Best Practices
- Use a hardened steel nozzle to prevent rapid wear
- Dry filament at 65°C for 4-6 hours before printing — moisture sensitive
- Print at 240-250°C with bed at 75-85°C
- Moderate part cooling (30-50%) for balanced strength and overhangs
- Keep nozzle diameter at 0.5mm or above to reduce clogging risk
- Store in sealed container with desiccant when not in use