ColorFabb XT-CF20 (Carbon Fiber Filament)

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Price $89.95

Stock available

1.75mm Diameter 3
2.85mm Diameter out of stock

Print in Carbon Fiber!

Supplied in a 750 gram filament spool size. ColorFabbs exciting new Carbon Fiber Filament will let you to print with carbon fibre at home! Carbon finer is naturally abrasive, allowing you to create prints that are functional with dimensional stability, stiffness and heat resistant.

Nozzles made from stainless steel or hardened copper alloys are recommended when using this filament. It is loaded with no less than 20% specially sourced carbon fibers suitable for 3D Printing.

Despite this ColorFabbs carbon fiber filament is made from a Styrene Free solution producing a low odour. It also has a very high melt strength and viscosity with a matt black surface. It has an extremely high flex modulus (6.2 GPa) making it twice as stiff as PLA filament.

When creating with the new carbon fiber filament you won’t find your filament being extremely brittle but rather tough with a moderate strain at break (8-10%) and high glass temperature (Tg = 80C.)

Tips and Tricks for Printing

Learn to print with XT-CF20 (Carbon Fibre)


Material colorFabb XT-COPOLYESTER
Diameter Tolerance ± 0.05 mm
Density 1.370 g/cm3
Glass Transition Temperature 75C
Spool Size 750 grams of filament

Pushing The Limits Of 3D Printing: 3D Printed Bike

This Race track bike was printed on a regular desktop 3D printer at colorFabb‘s print lab using colorFabb’s XT-CF20 filament (a carbon fiber based Amphora 3D polymer) a plastic especially engineered for 3D printing.

This concept bike (designed by Stephan Schürmann) has been developed to demonstrate that a 3D Printed racing bike can be produced on a regular, commercially available 3D Printer. The design goal was to use the bike in real life, under normal circumstances.

This design can be customized and 3D printed on any desktop 3D printer like the Ultimaker, LeapFrog, Mass Portal, Makerbot and many others.

The 20% carbon fiber content makes the 3D Printed parts strong and stiff and the strength of the bike frame has been tested with a FEM analysis and, of course in real life use.

Read more about it on our blog


Store filament away from the sun and in a sealed plastic bag with the silicon moisture bag inside.


A special point of attention is the abrasive nature of the carbon fibers. In general these fibers will accelerate the nozzle-wear of brass nozzles, much faster than unfilled filaments. Therefore we recommend to use nozzle’s from Stainless steel or hardened copper alloys.