3RDAX™ ASA-CF Carbon Fiber 1.75mm
ABOUT THIS FILAMENT
ASA-CF takes the outdoor durability and heat resistance of standard ASA and reinforces it with Carbon Fiber to increase stiffness, reduce flex, and improve dimensional stability. It keeps the same strong UV resistance and weather stability that make ASA such a practical material for outdoor and automotive use, while adding a more rigid feel and cleaner matte surface finish.
That makes it a strong choice for parts where appearance, rigidity, and long term outdoor performance all matter. Compared to standard ASA, it often produces cleaner looking parts with less visible layer lines and a more technical finish straight off the printer.
Like standard ASA, it is still a proper functional material. It requires more care than PLA or PETG, but rewards that extra effort with strong, stable parts suited to harsher real world environments.
WHERE IT WORKS BEST
ASA-CF works best for outdoor functional parts where stiffness and dimensional stability matter more than impact resistance or flexibility. It is well suited to automotive brackets, mounts, housings, covers, external fixtures, workshop tooling, and exposed structural parts where UV resistance and heat stability are important.
It is particularly useful when standard ASA may still have too much flex for the application, or when a cleaner and more technical surface finish is preferred.
For many users, ASA-CF fills the gap between standard ASA and more advanced reinforced engineering materials without stepping too far into higher cost or more difficult processing.
WHERE IT COMES FROM
ASA-CF starts with standard ASA, a petroleum based thermoplastic derived from crude oil and natural gas. These raw materials are refined into the chemical building blocks used to create the polymer, primarily acrylonitrile, styrene, and acrylic rubber.
This is where ASA differs from ABS. While ABS uses butadiene rubber, ASA uses an acrylic based rubber instead. That change gives ASA its stronger resistance to UV exposure, weathering, and long term environmental ageing, while still keeping much of the strength, toughness, and printability that makes ABS so widely used.
That base material is then reinforced with chopped Carbon Fiber, which changes the way the material behaves by increasing stiffness, reducing flex, and improving dimensional stability. Like many Carbon Fiber filled materials, that added rigidity usually comes with some trade off in impact toughness, making it better suited to rigid functional parts rather than flexible or impact heavy applications.
PRINTING WITH IT
ASA-CF prints much like standard ASA, but with the added abrasion that comes with Carbon Fiber. It still benefits heavily from an enclosure, stable temperatures, and strong bed adhesion, especially on larger parts where warping or lifting can still occur.
Because of the abrasive Carbon Fiber content, a hardened nozzle is essential. Brass nozzles are not recommended, as wear will quickly affect print quality and dimensional accuracy.
Bed adhesion remains important, particularly on larger flat parts or sharper cornered prints. A quality build surface and adhesive, such as Dimafix, can make a significant difference in reducing edge lift and improving first layer hold.
Like standard ASA, it also produces noticeable fumes during printing, so ventilation is recommended. The Carbon Fiber reinforcement can help improve dimensional stability during printing, often making longer or flatter parts easier to keep accurate compared to standard ASA.
MATERIAL COMPATIBILITY
ASA-CF behaves best as a single material print and bonds reliably to itself when printed correctly.
For supported prints, materials designed for higher temperature environments such as HIPS are often the most suitable pairing, as they better match ASA-CF’s printing temperatures and enclosure requirements. This helps maintain cleaner interfaces and more predictable support removal.
Like standard ASA, it does not naturally pair well with PLA or PETG due to the large differences in print temperatures and shrink behaviour. Because of the Carbon Fiber content, support tuning may also require some adjustment compared to standard ASA, especially for tighter interface layers or more detailed support contact areas.
BASE, CARBON OR GLASS?
Standard ASA remains the better all round option when impact resistance, toughness, and a small amount of flexibility are more important. It is often the safer choice for parts that may take knocks, vibration, or repeated handling.
ASA Carbon Fiber shifts that balance toward stiffness and dimensional stability. It reduces flex, holds shape better under load, and often produces cleaner looking parts with a more matte techn