Carbon Fiber Filament for 3D Printing | Fiberon™ by Polymaker

Carbon Fiber Filament for Strong, Lightweight 3D Printed Parts

Fiberon™ carbon fiber filament is engineered for makers, engineers, and manufacturers who need stiff, lightweight, dimensionally stable 3D printed parts. Carbon fiber reinforcement increases rigidity and helps reduce warping compared with unfilled materials, making it a strong choice for functional prototypes, production fixtures, brackets, enclosures, and performance-focused end-use parts.

Explore carbon fiber 3D printer filament across multiple base polymers, including PET, PETG, nylon, ASA, PPS, and other engineering materials. Choose the base material that matches your requirements for heat resistance, toughness, chemical resistance, weatherability, or ease of printing—then get the stiffness and precision benefits of carbon fiber reinforcement.

What Is Carbon Fiber Filament?

Carbon fiber filament is a 3D printing material made by reinforcing a thermoplastic base polymer with chopped carbon fibers. The polymer determines the material's core behavior—such as heat resistance, chemical resistance, toughness, and ease of printing—while carbon fiber increases stiffness and helps produce more dimensionally stable parts.

This makes carbon fiber filament especially useful when standard filament is too flexible, when large parts are prone to warping, or when a project requires a more rigid engineering material. It is commonly used to produce brackets, jigs, fixtures, drone components, automotive parts, tools, robotics components, and other functional 3D printed parts.

Fiberon™ is Polymaker's family of engineering fiber-reinforced 3D printing materials. Its carbon fiber range gives you the flexibility to choose a base polymer for your application, from accessible PET and PETG formulations to nylon, ASA, PPS, and other high-performance engineering materials.

Why Choose Carbon Fiber Filament?

Higher stiffness: Carbon fiber reinforcement helps parts resist bending and deflection. This is useful for brackets, mounts, fixtures, arms, panels, and other shapes that need to hold their geometry under load.

Improved dimensional stability: Carbon fiber can help reduce shrinkage and warping compared with the unfilled base polymer. That can improve dimensional accuracy for large parts, precise assemblies, and functional prototypes.

Strong strength-to-weight performance: Carbon fiber-filled materials are a practical option for parts that need rigidity without excessive weight. This is valuable for drones, RC vehicles, robotic systems, sports equipment, and lightweight structural applications.

Professional matte finish: Many carbon fiber filaments produce a clean, matte surface that helps hide layer lines. This makes them a good fit for polished prototypes and end-use parts where appearance matters alongside performance.

Material options for demanding applications: The Fiberon range allows you to pair carbon fiber reinforcement with polymers selected for a specific job: PET or PETG for accessible engineering prints, nylon for toughness, ASA for weather resistance, and PPS for demanding high-temperature, chemical-resistant applications.

Choose the Right Fiberon Carbon Fiber Filament

Fiberon™ PET-CF17

Fiberon™ PET-CF17 is a carbon fiber-reinforced PET filament designed for engineering-grade 3D printing. With 17% carbon fiber content, it combines high stiffness, dimensional stability, heat resistance, and a high-quality matte finish. Choose PET-CF17 for functional prototypes, jigs, fixtures, brackets, tooling, and production parts where reliable accuracy and an excellent surface finish are priorities.

Fiberon™ PETG-rCF

Fiberon™ PETG-rCF combines PETG with recycled carbon fiber reinforcement. It is a practical option for users who want the accessible printability of PETG with added rigidity and a more stable, professional-looking finish. Use it for functional parts, workshop tools, housings, prototypes, and other applications where standard PETG needs more stiffness.

Fiberon™ PA-CF Filaments

Carbon fiber nylon filament combines the strength and toughness of nylon with the stiffness and dimensional stability of carbon fiber. Fiberon PA-CF materials are suitable for functional engineering components, tooling, automotive parts, machine elements, and structural applications that benefit from strong mechanical performance. Because nylon absorbs moisture, dry the material according to the specific product guidance before printing.

Fiberon™ ASA-CF08

Fiberon™ ASA-CF08 combines carbon fiber stiffness with ASA's UV and weather resistance. It is a strong fit for outdoor brackets, automotive accessories, weather-exposed housings, and functional parts that require long-term performance in sunlight and changing outdoor conditions. Choose ASA-CF08 when your part needs both outdoor durability and improved rigidity.

Fiberon™ PPS-CF10

Fiberon™ PPS-CF10 is a carbon fiber-reinforced high-performance material for demanding engineering applications. PPS offers strong heat and chemical resistance, while carbon fiber adds stiffness and dimensional stability. Choose PPS-CF10 for high-temperature components, chemical-exposed parts, industrial tooling, and advanced applications that require a capable printer setup.

PPS-CF10 is intended for advanced users and compatible high-temperature printers. Review its product page and technical data sheet carefully to confirm hot-end capability, heated chamber requirements, build-surface recommendations, and drying guidance before use.

Carbon Fiber Filament Printing Guide

Carbon fiber filament requires a printer setup suitable for abrasive filled materials. Carbon fiber particles can wear a standard brass nozzle quickly, so use a hardened steel, tungsten carbide, ruby-tipped, or other abrasion-resistant nozzle. A larger nozzle diameter can also improve reliability, particularly with heavily filled grades.

Printing settings depend on the base polymer. Always start with the recommended temperature, bed, cooling, enclosure, and drying guidance shown on the relevant Fiberon product page and technical data sheet. Nylon, PPS, and other hygroscopic engineering materials need particular attention to drying and dry storage.

For the best results:

Use a hardened or abrasion-resistant nozzle
Check the recommended nozzle diameter for the specific Fiberon material
Dry the filament according to its product guidance before printing
Store opened spools in a dry box or sealed container with desiccant
Use an enclosure when recommended for high-temperature or warp-prone polymers
Start with manufacturer print profiles, then tune temperatures and cooling for your printer

Carbon Fiber Filament Applications

Carbon fiber 3D printer filament is a strong fit for projects where rigidity, low weight, dimensional stability, and a professional finish are important:

Jigs, fixtures, gauges, and custom production tools
Functional prototypes and low-volume end-use parts
Robotics frames, arms, mounts, and brackets
Drone, RC, and lightweight performance components
Automotive clips, trim pieces, ducts, and custom accessories
Electronics housings and precision enclosures
Machine guards, replacement parts, and workshop tools
Structural brackets, panels, and mounting hardware
High-temperature industrial components and chemical-resistant tooling with PPS-CF10

Carbon Fiber vs Glass Fiber Filament

Choose carbon fiber filament when stiffness, dimensional stability, lightweight performance, and a matte black finish are the priority. It is commonly preferred for precision fixtures, structural brackets, lightweight components, and parts that need to resist bending.

Choose glass fiber filament when toughness, durability, electrical insulation, or a more cost-efficient reinforcement is the better match for your application. Both material families require attention to nozzle wear and material-specific drying requirements.

Not sure which reinforced material is right for your project? Explore the Glass Fiber Filament collection, compare the properties on individual product pages, and select the base polymer that matches your mechanical, thermal, environmental, and printing requirements.

Carbon Fiber Filament FAQ

What is carbon fiber filament?

Carbon fiber filament is a 3D printing material made by combining a thermoplastic polymer with chopped carbon fibers. The base polymer provides properties such as toughness, heat resistance, and chemical resistance, while the carbon fiber adds stiffness and improved dimensional stability.

What is carbon fiber filament used for?

Carbon fiber filament is used for stiff, lightweight functional parts such as brackets, jigs, fixtures, tooling, drone components, robotics parts, automotive accessories, housings, and engineering prototypes.

Is carbon fiber filament worth it?

Carbon fiber filament is worth it when your part needs more stiffness, lower warping, better dimensional stability, or a professional matte finish than an unfilled material can provide. For decorative models or low-stress parts, a standard PLA or PETG may be more cost-effective.

How strong is carbon fiber filament?

Carbon fiber reinforcement typically increases stiffness and can improve dimensional stability, but final part performance depends on the base polymer, fiber loading, part geometry, wall count, print orientation, and print settings. Compare the technical data sheets of specific Fiberon materials when selecting a filament for a load-bearing application.

Do I need a hardened nozzle for carbon fiber filament?

Yes. Carbon fiber-filled filament is abrasive and can wear a brass nozzle quickly. Use a hardened steel, tungsten carbide, ruby-tipped, or another abrasion-resistant nozzle. Check the specific Fiberon product page for nozzle-size guidance.

Can any 3D printer print carbon fiber filament?

Not every printer is suitable. At a minimum, your printer needs an abrasion-resistant nozzle and must be able to reach the material’s required nozzle temperature. Some carbon fiber materials, including nylon, PPS, and high-temperature grades, may also require a heated bed, dry filament handling, an enclosure, or a high-temperature hot end.

Is carbon fiber filament conductive?

Most carbon fiber-filled filaments should not be assumed to be electrically conductive. Electrical properties vary by formulation, fiber content, and intended material design. Check the technical data sheet if electrical conductivity, ESD performance, or insulation is important for your application.

Does carbon fiber filament need to be dried?

Drying requirements depend on the base polymer. Nylon, PPS, and other hygroscopic engineering filaments need careful drying and dry storage. Follow the drying instructions listed for the specific Fiberon product before printing.

Carbon fiber vs glass fiber filament: which should I choose?

Choose carbon fiber for stiffness, lightweight performance, dimensional stability, and a matte finish. Choose glass fiber for applications where toughness, impact resistance, electrical insulation, or cost efficiency are more important. In both cases, choose the base polymer according to the temperature, chemical, environmental, and mechanical demands of the final part.

Carbon Fiber Filament