3D printer filament eSun EPETG-CF 1.75 mm Deep Blue 1 kg

eSun EPETG-CF 1.75 mm Deep Blue is a carbon-fiber–reinforced PETG filament offered on a 1 kg spool for FDM/FFF 3D printers that accept PETG-type materials. The material combines PETG’s ease of printing and chemical resistance with short carbon fibers for increased stiffness, improved dimensional stability, and a matte, textured surface finish in a deep blue tone. It is intended for functional prototypes and end-use parts where greater rigidity and an enhanced appearance are required compared with standard PETG.

Advantages

The carbon-fiber reinforcement increases flexural stiffness and reduces part deformation during and after printing. EPETG-CF maintains PETG’s relatively simple printability, offering lower tendency to warp than crystalline materials while providing better layer adhesion than many composites. The deep blue coloration with a subtle textured surface improves visual appeal for visible components without additional post-processing. The filament’s balance of strength, dimensional stability, and ease of use makes it suitable for a wide range of practical applications.

Suitable for

• Functional prototypes requiring increased stiffness and dimensional accuracy
• Structural or mechanical parts such as brackets, housings, and fixtures
• Visual components where a deep blue textured finish is preferred
• Applications needing good chemical resistance and moderate temperature performance

When it may not be suitable

This carbon-fiber–filled PETG is more abrasive than unfilled PETG; use hardened or wear-resistant nozzles to avoid accelerated nozzle wear. Very small or highly detailed cosmetic models may not benefit from the textured surface and slightly reduced ductility compared with standard PETG. High-temperature applications above PETG’s service range or parts requiring significant impact resistance may require alternative materials.

Key specifications

• Diameter: 1.75 mm
• Spool weight: 1 kg
• Base material: PETG with short carbon-fiber reinforcement
• Color/finish: Deep Blue, matte/textured surface
• Compatibility: FDM/FFF 3D printers compatible with PETG-type filaments

How to use

Print the filament on an FDM/FFF printer that supports PETG materials. Use a hardened steel or other wear-resistant nozzle to mitigate abrasive wear from carbon fibers. Typical printing temperatures for PETG-based materials are a good starting point, but adjust nozzle and bed temperatures according to your printer and part requirements to optimize layer adhesion and surface quality. Apply a suitable build-surface preparation or adhesion aid to the heated bed to prevent lifting during the first layers. Slow to moderate print speeds and adequate part cooling help achieve consistent results.

What to consider before purchase

• Ensure your printer supports 1.75 mm PETG-type filaments and has or can accommodate a hardened nozzle for abrasive materials
• Verify required mechanical and thermal properties; carbon-fiber PETG increases stiffness but reduces ductility compared with standard PETG
• Consider post-processing needs: textured finish may hide minor layer lines but makes sanding or polishing more difficult
• Confirm spool weight (1 kg) fits your filament holder or enclosure

Usage recommendations

For best results use a hardened nozzle, moderate print speeds, and tuned temperatures for PETG; allow printed parts to cool gradually and avoid service temperatures above PETG’s recommended range. Store the filament in a dry environment or sealed container with desiccant to preserve printability.