ROSA3D Filament Refill PCTG + 10CF 1.75 mm 1 kg – Black

ROSA3D Filament Refill PCTG + 10CF 1.75 mm 1 kg – Black is a composite 3D printing filament combining PCTG base polymer with 10% carbon fiber reinforcement in a 1.75 mm diameter spool. It is formulated to offer greater stiffness and improved dimensional stability compared with standard PCTG, while keeping good layer adhesion and a smooth matte surface. The 1 kg spool provides material suited for longer print runs and parts that require enhanced mechanical properties and a refined finish.

Advantages

This filament delivers higher tensile rigidity and reduced creep relative to unfilled PCTG, resulting in parts that maintain shape under load. The carbon fiber content improves surface texture and reduces visible warping, while the PCTG matrix retains impact resistance and ease of printing. The 1.75 mm diameter ensures consistent extrusion flow on printers calibrated for that filament size, and the 1 kg spool size supports both prototype iterations and small batch production.

Suitable for

• Functional prototypes and testing models requiring increased stiffness
• Structural components, brackets and housings with moderate load-bearing needs
• Mechanical parts, jigs and fixtures used in workshops and small production
• Hobbyist and professional prints where improved surface finish and dimensional stability are desired

Key specifications

• Material: PCTG polymer with 10% carbon fiber reinforcement
• Diameter: 1.75 mm nominal
• Net weight: 1 kg spool
• Color: Black with matte/semimatte finish
• Recommended extrusion characteristics: elevated stiffness and improved dimensional stability compared to standard PCTG

How to use

Load the 1.75 mm filament onto a compatible FDM/FFF 3D printer designed to accept composite filaments. Use a hardened or wear-resistant nozzle to reduce abrasion from carbon fibers and set extrusion temperatures appropriate for PCTG blends as recommended by the printer or filament manufacturer. Calibrate extrusion multiplier and flow to account for the reinforced material, and allow for modest adjustments to retraction settings to prevent stringing. Print on a heated bed with suitable adhesion aid to minimize warping and ensure first-layer bonding.

Usage recommendations

For best results, use a hardened steel or ruby nozzle, print with a heated bed and moderate enclosure if available, and store the filament in a dry environment to preserve print quality. Test small calibration prints to define optimal temperature and flow before producing critical parts.