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Composite · Carbon-fiber copolyester

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PETG Carbon Fiber

Carbon Fiber PETG

Carbon-fiber-reinforced PETG: stiffer, more dimensionally stable, with a matte finish. Needs a hardened nozzle.

Print temperatures

Nozzle 240260 °C Bed 70–90 °C

PETG-CF takes PETG's durability and adds carbon-fiber stiffness and dimensional stability — and the fibers actually reduce the stringing that plagues plain PETG.

Like all CF filaments it's abrasive (hardened nozzle required), and the fibers boost stiffness more than ultimate strength.

Strengths & trade-offs

  • Stiffer and more dimensionally stable than PETG
  • Reduced stringing vs plain PETG
  • Good chemical and heat resistance
  • Premium matte-black look
  • Lightweight
  • Abrasive — hardened nozzle required
  • More brittle than plain PETG
  • Hygroscopic — dry before printing
  • Needs a larger nozzle (≥0.4–0.6 mm)
  • Pricier

Best for

Functional / engineering bracketsJigs and fixturesRC and drone partsSemi-structural enclosures

Did you know

  • Adding carbon fiber actually helps PETG print — the fibers cut the stringing plain PETG is notorious for.
  • As with all chopped-CF filaments, the fibers chiefly increase stiffness, not impact strength.