PETG-CF Pro15 – Co-Extruded Carbon Fibre Enhanced PETG Filament

PETG+CF (Co-Extruded)

The PETG-CF Pro15 filament is an engineering-grade, carbon fiber-reinforced PETG material with a cutting-edge skin-core structure. The core consists of PETG reinforced with 15% chopped carbon fiber, providing exceptional strength and rigidity, while the outer shell is made of unfilled PETG resin designed for high bond strength and superior surface quality.

During printing, the polymer fluid maintains a laminar flow state through the throat and nozzle, preserving the filament’s unique skin-core structure even after extrusion. This innovative design offers several key advantages:

• Enhanced Mechanical Properties: Combines the low shrinkage, warpage resistance, and high strength typical of fiber-reinforced materials with significantly improved interlayer bonding.
• Stronger Interlayer Adhesion: Addresses the common weakness in traditional fiber-reinforced materials, ensuring printed parts have durable and reliable bonding between layers.
• Superior Surface Finish: The unfilled PETG outer layer eliminates floating fibers on the surface, delivering a clean texture that enhances the appearance of printed models.

Made with premium carbon fiber—not powder or dust— PETG-CF Pro15 retains all the advantages of carbon fiber reinforcement while ensuring a smooth, professional finish. Its skin-core structure offers not only low shrinkage and excellent warpage resistance but also unrivaled interlayer strength, making it the ideal choice for functional and aesthetically demanding applications.

Printing Tips：

The filament is designed to maintain its core-skin structure during extrusion, leveraging the stable laminar flow state of the molten polymer. However, at excessively high printing speeds, the melt flow can become unstable, disrupting the core-skin structure. This instability can lead to rough or uneven surfaces on the printed part.

To prevent this issue and maintain optimal print quality, it is recommended to either increase the printing temperature or reduce the extrusion speed to restore stable laminar flow and preserve the filament’s core-skin integrity.

Nozzle: We currently recommend a hardened steel nozzle with a minimum diameter of 0.4mm.

Diameter 1.75mm2 ±0.03
Density 1.252 ±0.05g/cm2
Print Temp 230-260ºC
Hot bed 70-90ºC (required)
Surface Glass, PEI, BuildTak, Kapton tape, Painter’s tape, Garolite, Polypropylene (PP) sheets, FlexPlate system, GeckoTek