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R3D High Speed Carbon Fiber PETG is a 1.75mm filament that blends PETG with carbon fiber for extra stiffness and a matte black finish. It is tuned for fast printers, claiming consistent extrusion and strong layer bonding at higher speeds. The carbon fiber cuts flex and hides layer lines, which suits functional brackets, jigs and mechanical parts. Against plain PETG it is stiffer and more dimensionally stable, but more abrasive on nozzles and less forgiving on layer adhesion.
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R3D High Speed Carbon Fiber PETG is a 1.75mm filament for FDM/FFF 3D printers, sold on a 1kg spool in black. It is a PETG-based filament reinforced with carbon fiber. This gives it more stiffness, less flex and better dimensional stability than standard PETG.
It is made for high-speed printers and extrudes consistently with good layer bonding at higher print speeds. It prints with low warping, less stringing than standard PETG and a matte finish that helps hide layer lines. Bed adhesion is strong on PEI, textured plates and glass with proper preparation.
Because the carbon fiber is abrasive, it needs a hardened steel or wear-resistant nozzle. It works best with a stable extrusion system and good cooling control. Printing difficulty is moderate: easier than many engineering filaments, but it needs proper setup. Typical uses include functional mechanical parts and brackets, tooling, jigs and fixtures, automotive and engineering components, robotics and drone parts, structural prototypes, and enclosures and housings.
