PET-CF

What Is PET-CF?

PET-CF combines a PET base polymer — the stiffer, more heat-resistant parent material of PETG — with chopped carbon fibre. On its own, PET is difficult to print; the carbon fibre stabilises it, controls shrinkage, and adds significant rigidity. The result is an engineering filament that prints as easily as PETG but performs closer to a true technical material, with a heat resistance and stiffness standard PETG can't match.

PET-CF vs PETG, Nylon and Polycarbonate

Choose PET-CF over PETG or PETG-CF when parts need to stay rigid and hold tolerances under load or heat — PETG softens and creeps at temperatures PET-CF shrugs off, making PET-CF the better choice for automotive interiors, printer parts, and anything left in a hot car or shed.

Choose PET-CF over PA-CF (nylon) when you want carbon-fibre stiffness without nylon's moisture problems. Nylon absorbs water from the air, causing swelling, softening, and print quality issues; PET absorbs very little, so parts stay stable and the filament is far easier to store and print — a real advantage in humid Australian conditions. Reach for nylon only when impact toughness or wear resistance matters more than rigidity.

Choose PET-CF over PC (polycarbonate) when you don't need PC's extreme heat and impact resistance. PC requires very high temperatures and an enclosure to print reliably; PET-CF prints on open-frame machines with no enclosure and far less warping.

Why Choose PET CF?

• Higher heat resistance than PETG — parts stay rigid where PETG softens or creeps
• Carbon-fibre stiffness without nylon's moisture sensitivity — easier storage, drying, and printing
• Excellent dimensional stability — low shrinkage and warp for accurate, repeatable functional parts
• Technical matte finish that hides layer lines for a professional, moulded look
• No enclosure required — prints reliably on open-frame machines (hardened nozzle required)

Best Uses

PET CF filament excels wherever rigidity, accuracy, and heat tolerance matter more than flexibility: brackets and mounts, jigs and fixtures, drone frames, automotive and motorcycle components, camera rigs, 3D printer upgrades, and end-use mechanical parts. If a PETG part has ever flexed, sagged, or deformed in the heat, PET-CF is the direct upgrade.

PET Carbon Fibre Filament Specifications

Property	Value
Hex Colour	#000000
Enclosure	Not Required
Hardened Nozzle	Required
Filament Diameter	1.75mm
Tolerance	±0.02mm
Net Weight	1 kg
Gross Weight	1.5 kg
Empty Spool Weight	256 grams

PET Carbon Fibre filament is a reinforced engineering filament designed for stiff, strong, and dimensionally stable functional prints.

Why Choose PET CF?

• Carbon fibre reinforced stiffness
• Good dimensional stability
• Technical matte finish
• Suitable for demanding functional parts

Best Uses

PET CF filament is ideal for brackets, jigs, fixtures, mechanical parts, enclosures, and prints requiring stiffness and stability.

Explore More Carbon Fibre Filaments

Browse PET CF filament or explore PETG CF filament and Carbon Fibre filament.