Polymaker Fiberon PET-CF17 Carbon Fiber PET Filament 1.75mm, Black, 3kg | For rigid tooling and heat-exposed parts; high stiffness, reduced moisture sensitivity, no heated chamber required

Product Details

• 17% Carbon Fiber Reinforced PET: Engineered for high stiffness and dimensional stability, making it well suited for jigs, fixtures, tooling, rigid prototypes, and functional parts that need to maintain their shape under load.
• Annealed HDT up to 147.5°C: After annealing at 120°C for 10 hours, printed specimens reach an HDT of 147.5°C at 0.45 MPa and 105°C at 1.8 MPa. Actual part performance depends on geometry, load, print settings, and orientation.
• Easier Moisture Management: PET-CF17 is less sensitive to ambient moisture than many nylon-based composites, but it should still be stored sealed and dry. If the filament has been exposed or printing quality declines, dry at 100°C for 10 hours before use.
• Professional Printing Setup: Print at 270–300°C with a 70–80°C build plate and the cooling fan off. A heated chamber is not required, but an all-metal hotend and a hardened, wear-resistant nozzle are recommended for reliable extrusion.
• Important Handling Information: Carbon fiber reinforcement makes the filament rigid. Avoid sharp bends and multiple turns in the feed path. For load-bearing parts, position the main load along the XY plane where possible and tune temperature and speed for consistent layer adhesion.

From the listing on Amazon.

View our other Polymaker listings here.

View our other PET-CF listings here.

Keep your filament dry, view our gear here.

Nozzle Compatibility

Carbon fiber is abrasive and wears brass (and stainless) nozzles out of round, sometimes within a single spool. Use hardened steel or another wear resistant nozzle such as ruby or tungsten carbide. With hardened steel, start about 5 to 10°C hotter than you would with brass.

Based on Bambu Lab and Prusa guidance. More in our carbon fiber filament guide and nozzle types guide.