Bambu Labs PET-CF filament is a unique blend of Polyethylene Terephthalate and carbon fibre designed for advanced 3D printing. This material boasts enhanced mechanical strength, thermal resistance, and a sophisticated matte finish. While prioritizing performance over aesthetics, PET-CF stands out in high-stress applications such as automotive and industrial parts.

Physical Properties

  • Density: Typically ranges from 1.3–1.4 g/cm³
  • Heat Deflection Temperature (ISO 75 0.45MPa): 205°C
  • Tensile Strength: Significantly improved compared to standard PET, often exceeding 90 MPa due to carbon fiber reinforcement

Aesthetic Quality

The filament usually presents a matte, textured finish due to the carbon fiber content, providing a sophisticated, industrial appearance to printed parts. Color options are often limited to darker or neutral hues, aligning with the material’s focus on functionality rather than aesthetics.

Durability and Usage

Bambu Labs PET-CF is known for its superior mechanical strength, rigidity, and thermal resistance compared to standard PET. The carbon fiber reinforcement renders it ideal for high-stress, functional applications, including automotive components, drones, and industrial parts. The enhanced durability also makes it well-suited for components that are subject to wear and movement.


Post-processing Bambu Labs PET-CF can be challenging owing to its high mechanical strength. While techniques like sanding, drilling, and painting are possible, these processes may require specialized tools and materials. Additionally, the material’s chemical resistance may necessitate specific adhesives or coatings for optimal bonding or finishing.

Environmental Impact

While PET itself is recyclable to some extent, the carbon fiber content complicates recycling efforts and reduces overall biodegradability. Thus, PET-CF is not as environmentally friendly as standard PET or bio-based materials like PLA. Responsible disposal or specialized recycling is recommended to minimize its environmental impact.

In summary, Bambu Labs PET-CF filament offers a unique combination of PET’s ease of printing with the high-performance attributes of carbon fiber. It is particularly suitable for advanced and functional 3D printing applications that require increased durability, rigidity, and thermal resistance. Although it is not as environmentally friendly as some other options, its performance advantages make it an outstanding choice for specialized, high-stress applications.

Bambu Labs PET-CF – Technical Data Sheet