3D printer filament POLYMAKER Fiberon PET-CF17 1.75 mm carbon-fiber reinforced

POLYMAKER Fiberon PET-CF17 1.75 mm is a carbon-fiber reinforced PET-based 3D printing filament engineered for improved stiffness, dimensional stability and heat resistance compared with standard PET. This filament combines PET's baseline chemical resistance and printability with short carbon fibers to produce parts suited to functional applications where increased mechanical performance and accuracy matter. Fiberon PET-CF17 is provided in 1.75 mm diameter and is intended for users who need stronger prototypes, jigs, fixtures and end-use components that tolerate higher loads and temperatures.

Advantages

Carbon-fiber reinforcement increases tensile stiffness and reduces part deformation under load, while the PET matrix maintains good layer adhesion and chemical resistance. The formulation offers better dimensional stability and heat resistance than typical PET filaments, helping printed parts keep shape in elevated temperatures. When printed with appropriate hardened nozzles and tuned settings, Fiberon PET-CF17 reliably produces functional components with consistent mechanical properties and surface finish suitable for engineering uses.

Suitable for

• Functional prototypes requiring higher stiffness and heat resistance
• Jigs, fixtures and tooling for workshop or production aids
• End-use parts exposed to mechanical load and moderate temperatures
• Parts where improved dimensional stability is important

Key specifications

• Material base: PET matrix reinforced with short carbon fibers
• Diameter: 1.75 mm
• Reinforcement: carbon-fiber filled for increased stiffness
• Recommended extrusion: use hardened nozzle to resist abrasion
• Mechanical focus: improved stiffness and dimensional stability vs standard PET
• Thermal behavior: increased heat resistance compared with unfilled PET

How to use

Load the 1.75 mm filament into a compatible FFF/FDM 3D printer and use a hardened steel or similarly wear-resistant nozzle to avoid abrasive wear from the carbon fibers. Set printing temperatures and cooling according to the printer manufacturer's guidance for PET-based filaments, adjusting extrusion multiplier and retraction to reduce stringing and ensure consistent flow. Increase bed adhesion with a suitable build surface or adhesion aid and consider a heated chamber or enclosure to reduce warping for larger parts. Tune layer height and print speed to balance surface finish and mechanical performance.

Usage recommendations

For best results print with a hardened nozzle, moderate print speed, and tuned temperature settings for PET-based materials. Validate part dimensions and properties with test prints before final production, and avoid environments exceeding the material's elevated but finite thermal limits.