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Composite FDM Filaments

PETG-CF

⬡ Chemical Resistant
240–260
°C
Print Temp
70–90
°C
Bed Temp
85
°C
Max Service
Overview
PETG reinforced with carbon fiber. Combines PETG ease of printing with improved stiffness and strength. Better heat resistance than PLA-CF. Hardened nozzle required. Print 240-260°C nozzle, 70-90°C bed.
Properties
Difficulty
intermediate
Flexibility
rigid
Layer Adhesion
good
Enclosure
no
Heated Bed
required
Dry Storage
required
Pros
  • Stiffer than plain PETG
  • Better heat resistance than PLA-CF
  • Chemical resistant
  • Easier to print than PA-CF
  • Good layer adhesion
Cons
  • Requires hardened nozzle
  • Rough surface
  • Black color only mostly
  • More expensive than PETG
  • Hygroscopic
Best For
  • Functional enclosures
  • structural clips
  • brackets needing stiffness + chemical resistance
  • outdoor fixtures
Avoid For
  • Smooth surface needs
  • dynamic flex parts
  • standard brass nozzles
Storage
Dry 4-6h @ 65°C. More moisture-sensitive than plain PETG. Store sealed.
Laser Compatibility
LASER INTERACTION Safety: CAUTION to AVOID — combines PETG thermal issues with carbon fiber particle release. CO2 engrave: 450mm/s @ 10% maximum — conservative only Result: Poor engraving quality due to CF inclusions deflecting melt pattern. Not recommended. Fumes: PETG VOCs plus carbon fiber particles. Requires HEPA + respirator. Warning: The combination of melt flow and CF particles creates unpredictable results and higher hazard. Avoid laser processing PETG-CF parts.
Brands
Bambu Lab PETG-CFPolymaker PolyMax PETG-CFOverture PETG CF3DF Filament PETG CF