3D printer filament Spectrum TF-24109 PETG-CF (polyethylene terephthalate glycol with carbon fiber), 1.75 mm, 1 kg, Blue

Spectrum Filaments TF-24109 is a blue PETG-carbon fiber composite filament for FDM 3D printing. The material blends polyethylene terephthalate glycol (PETG) with chopped carbon fibers to increase stiffness and dimensional stability while retaining PETG's ease of printing. The spool contains 1 kg of 1.75 mm filament packaged in a box.

Advantages

PETG-CF offers higher rigidity and improved surface finish compared with standard PETG, with reduced warping and better mechanical strength along printed layers. The blue colour provides consistent visual results for functional parts and prototypes, while the 1.75 mm diameter is compatible with most consumer and prosumer FDM printers. The 1 kg spool supports medium-length printing projects without frequent spool changes.

Suitable for

• Functional prototypes and end-use parts requiring increased stiffness
• Mechanical components subjected to moderate loads
• Visual prototypes and products where a blue finish is desired

When it may not be suitable

Because the filament contains carbon fibers, it is more abrasive than standard PETG and may accelerate wear on brass nozzles; hardened or coated nozzles are recommended for prolonged use. It is not ideal for applications requiring very high impact resistance or extreme flexibility.

Key specifications

• Material: Polyethylene terephthalate glycol with chopped carbon fiber (PETG-CF)
• Colour: Blue
• Diameter: 1.75 mm
• Net weight: 1 kg
• Recommended print speed (manufacturer reference): up to 200 mm/s

How to use

Load the 1.75 mm PETG-CF filament into an FDM printer equipped with a hardened or coated nozzle to limit abrasive wear. Use standard PETG printing temperatures as a starting point, adjust bed adhesion and cooling settings as needed, and tune retraction to reduce stringing. Monitor first layers for proper adhesion and make incremental changes to temperature or bed leveling if necessary.

What to consider before purchase

• Ensure your printer supports 1.75 mm filament
• Plan for a hardened nozzle if you will print frequently with carbon-fiber-filled materials
• Verify bed adhesion strategy for PETG (adhesives, textured surfaces, or PEI sheets)

Usage recommendations

For best results, print PETG-CF with a hardened nozzle, moderate print speeds, and active part cooling where appropriate; allow parts to cool slowly to reduce internal stresses and check nozzle condition regularly due to increased abrasion.