Siraya Tech
Siraya Tech Fibreheart Carbon Fiber Filament
Model: PPA-CF Black
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Pros
- •Exceptional layer adhesion with strong bed bonding when using a smooth PEI surface combined with glue stick application.
- •Industriarade carbon fiber nylon offers superior strength, rigidity, and toughness compared to many other filaments like PA6-CF and even rivals PEEK at a lower cost.
- •Virtually no warping due to glass fiber reinforcement, allowing great small and detailed prints even without a heated chamber.
- •Produces highly accurate and dimensionally stable prints with excellent interlayer adhesion, surpassing ASA and ABS in consistency.
- •Matte, noeflective surface finish beautifully masks layer lines at finer resolutions (0.15 mm or finer).
- •Can handle extremely high ambient temperatures (~200°C), making it ideal for demanding engineering applications.
- •Performs well at high nozzle temps (~300°C), enabling fast printing speeds (up to 800 mm/s) while maintaining durability.
- •Compatible with modified printing profiles (e.g., on Bambu P1S or Creality K1C) when settings are accurately applied.
- •More moisture resistant than most engineering plastics, reducing the need for extensive drying.
- •Supports removal is generally easy, and surface finish quality is decent for functional parts.
Cons
- •Requires very precise and often complex printing conditions: a larger nozzle (0.6mm+), high nozzle temps (2820°C), and a very hot heated bed (80-100°C or more).
- •Extreme filament rigidity demands printer modifications such as risers for the extruder and careful Bowden tube management to avoid print failures.
- •Feeding can be challenging; extruder gears often need tightening, and the filament spool may lift or destabilize dry boxes during prints.
- •Confusing and inconsistent recommended print settings between label instructions and website create calibration headaches.
- •Material brittleness and significant shrinkage cause functional mechanical parts to crack or fit poorly, particularly when tight fits or metal inserts are involved.
- •Carbon fibers’ length can clog smaller nozzles (0.4mm), limiting nozzle choice.
- •Not beginneriendly and can be frustrating for users unfamiliar with tuning advanced high-temperature filaments.
- •Fan cooling settings are tricky — often recommended to turn off fans but some profiles suggest partial speeds, leading to trial and error.
- •Certain bed surfaces (particularly smooth PEI alone) create overly strong adhesion that can damage the build plate without glue applications.
- •Despite high strength, mechanical precision for complex assemblies is difficult to achieve without extensive slicing adjustments and patience.
Bottom Line
Siraya Tech Fibreheart PPA-CF is a *powerhouse* filament tailor-made for experienced users seeking industrial-grade strength, heat resistance, and near-zero warping in carbon fiber nylon prints. However, it demands a serious mastery of high-temp printing, careful machine setup, and sometimes tricky adhesion balancing. If you want tough, dimensionally stable parts and are ready for some tuning battles, this is a stellar choice. For easier printing of engineering-grade carbon fiber nylon with less hassle, you might consider exploring PET-CF filaments known for their heat resistance and dimensional stability with fewer quirks. If precision mechanical parts or beginner-friendly printing is a priority, keep in mind this filament’s brittleness and shrinkage challenges — so be prepared to invest time optimizing your workflow.
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