3D printing filament Spectrum TF-24112 PETG-CF (polyethylene terephthalate glycol + carbon fiber), 1.75 mm, 1 kg, Grey

Spectrum Filaments TF-24112 is a grey PETG composite filament reinforced with carbon fibre, formulated for 3D printing. It comes on a 1 kg spool with a 1.75 mm diameter and is packaged in a box. The material combines PETG’s toughness and chemical resistance with added stiffness from carbon fibre, making it suitable for parts that require improved dimensional stability and surface finish compared with standard PETG.

Advantages

The PETG-carbon fibre blend offers higher rigidity and better dimensional stability than plain PETG, while retaining good layer adhesion and impact resistance. Its grey colour provides a neutral, professional appearance for functional prototypes and end-use parts. The 1.75 mm diameter and 1 kg weight make it compatible with most hobbyist and prosumer FDM printers and provide a practical spool size for moderate production runs.

Suitable for

• Functional prototypes and mechanical parts requiring increased stiffness
• Enclosures, brackets and fixtures where improved stability is needed
• Visual prototypes and end-use parts with a neutral grey finish

When it may not be suitable

As a carbon-fibre-reinforced PETG, this filament is more abrasive than standard PLA or PETG; therefore a hardened steel or other wear-resistant nozzle is recommended for prolonged printing. It is not optimal for applications that require high flexibility or elastic behaviour, since the carbon fibre increases stiffness and reduces elongation at break.

Key specifications

• Material: Polyethylene terephthalate glycol with carbon fibre reinforcement (PETG-CF)
• Colour: Grey
• Diameter: 1.75 mm
• Net weight: 1 kg
• Recommended print speed: up to 200 mm/s (printer- and part-dependent)

How to use

Load the filament on a compatible FDM printer with a 1.75 mm filament path. Use a hardened or wear-resistant nozzle to minimise abrasion. Typical print settings for PETG-CF start with nozzle temperatures similar to standard PETG, and print speed can be adjusted up to about 200 mm/s depending on the printer and model complexity. Ensure good bed adhesion and consider moderate cooling to reduce stringing; tune retraction and layer height for best surface quality.

What to consider before purchase

• Ensure your printer supports 1.75 mm filament and has or can accept a hardened nozzle for abrasive materials
• Verify the required mechanical properties—this filament increases stiffness but reduces flexibility
• Confirm filament storage and drying procedures for PETG-based materials if you print infrequently

Usage recommendations

For longer tool life and consistent print results, use a hardened steel nozzle, print at temperatures recommended for PETG with incremental tuning for carbon-fibre blends, and store the spool in a dry environment to prevent moisture absorption.