








🖤 Print Strong, Print Smart — Own the Future of 3D Precision
Siraya Tech Fibreheart PET-CF is a premium 1.75mm carbon fiber reinforced PET filament designed for professionals demanding high strength, rigidity, and dimensional accuracy. Its intelligent fiber mesh technology ensures superior mechanical properties and heat resistance, while the sealed packaging preserves filament dryness for flawless prints. Perfect for industrial prototypes, drone components, and high-performance custom parts.


































| ASIN | B0CSPFL7MB |
| Best Sellers Rank | 7,355 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 226 in Filament 3D Printing Materials |
| Brand Name | Siraya Tech |
| Colour | PET-CF Black 1kg |
| Country Of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (202) |
| Global Trade Identification Number | 00850019574630 |
| Item Diameter | 1.75 Millimetres |
| Item Weight | 1.2 Kilograms |
| Manufacturer | Siraya Tech |
| Manufacturer Part Number | PET - CF |
| Material Type | PET-CF |
| Model Number | 3003 |
| Number of Items | 1 |
| Special Features | Combination of PET and carbon fiber, intelligent fiber reinforcement technology, excellent dimensional stability |
| Unit Count | 1000.0 gram |
G**L
Tough Filament
This is the first PET CF filament I tried so I cannot compare it to others. All I can say is the resulting prints are very tough and rigid. Dry, dry, dry, absolutely necessary with this filament as you're no doubt aware. Straight out of the vacuum sealed bag it was pretty good but after a day the prints were rough. Heated dryer was purchased (Creality Official Space PI Filament Dryer Plus) and this resulted is perfect prints. Attached pic, two bottom components printed from freshly opened bag. Top after drying for 12 hrs at 65 deg C. Note the glossy textured finish and lack of layer lines, its actually better than depicted. The print between opening the bag and drying the filament went straight into the bin, ragged and rough. This was circa 12hrs exposed to UK cold and humidity. I thought I would try and pull the print apart to see just how strong it was, absolutely no chance. It opened up a little at the clamping end but went no further. Overall, great value for money, print using the specified parameters, keep it dry.
M**A
Nice stuff, not a nightmare to print
Bought this to print a high temp tool head for my Voron printer. It wasn't too hard to print, but you'll need to achieve some quite high temperatures so you won't be printing this on a big standard printer. Once annealed it's quite tough, light and very brittle. It's quite hard to keep dry, you'll need the ceramic bead drying stuff, dessicant won't cut it and an active heater needs to be warmer than your typical filament dryer will go; some people dry it in an air fryer I hear, but don't use the one you cook food in, it's not safe; buy one specifically for drying this and annealing in salt. Haven't used the whole roll yet but this will be my go to next time I need more.
R**N
Excellent engineering filament
Bought this to upgrade some parts on my Voron which are currently ASA CF but I wanted the extra rigidity and temperature resistance of annealed PET CF. Yes, it is brittle compared to some other filaments but as long as your careful loading it's not an issue. Loaded it straight out of the box, downloaded the settings from the Siraya website and threw a benchy at it. Didn't bother with any of my usual calibration routines and was very impressed with the results. This will be my new go-to when I want strong heat resistant parts.
E**S
Very good, durable and easy to print
Very good, durable and easy to print
W**N
Beautiful prints, but unusable
Prints beautifully using manufacturer supplied print settings and the finish is beautiful, however my roll was extremely brittle the filament would keep snapping in my hand when loading it into my Direct drive extruder, and layer adhesion was poor. I had high hopes, maybe this roll was just a bad one
K**W
Good quality PET CF at a really good price.
PET CF is a really strong filament I use for industrial prints. Siraya PET CF prints well with high temp enclosed printers. Needs to be dried before and during printing to obtain best layer adhesion and reduce stringing. Annealing really improves its strength. Highly recommend at this price range.
A**R
寸法精度が良くて扱いやすいエンプラとして使ってみました。 Bambu P1Sでプリントしました。Siraya Techに印刷プロファイルがあるのでそれをすこし変更して使いました。SuperTackのプレート温度が35度でしたが65度に変更しました。 Smooth PEIは使わないほうが良いです。定着が良すぎてプレートを壊してしまいました。SuperTack推奨です。ベッド温度が低くできて白化しにくくなります。 他のエンプラと違って湿気にも強くリーズナブルでとても良い。 ー追記ー Smooth PEIですがのり(ケープ3Dエクストラキープ)を使えば無事に剥離できました。
F**0
Il PET-CF (non PETG!!) è il mio filamento "ingegneristico" preferito, resiste a temperature altissime, non diventa morbido con il calore, non si deforma sotto sforzo, non si restringe dopo averlo stampato (quasi l'opposto dell'ABS) e questo in particolare è veramente semplice da stampare usando i profili che Siraya Tech include. Attenzione però, Siraya usa delle fibre di carbonio abbastanza lunghe per avere un filamento più forte ma questo vuol dire che stampandolo con un ugello da 0.4mm è quasi garantito che si intasi, e poi pulirlo è praticamente impossibile. Con uno 0.6 ho avuto 0 problemi, e le parti escono comunque molto belle.
J**E
Muy rígido, buena adhesión entre capas, fácil de imprimir… Lo tiene todo, hasta el acabado es bonito, un poco rugoso. Imprimiendo a 290
C**N
As the title suggests this is my first high-end filament that goes beyond PLA or PETG. Because of that I was a little bit nervous regarding settings and wasted material. I'm running a Qidi Q2 basically straight out of the box with no adjustments to the flow or any other minutia. I'm using the standard textured PEI plate with a small amount of purple glue to ensure adhesion and also protect the PEI plate a little bit since it's running so hot. Given the prince that I was doing I had no issue with bed adhesion and the glue made removal relatively easy. I used out of the box PET-CF settings from the qidi slicer, but adjusted the nozzle temperature to 300° c to ensure layer adhesion. A few things I want to note, this filament is much more brittle than other filaments. Because of this I took the lid off of my printer so the feeding tube would have the largest curves. If you are using your full bed there's a chance that in some of the corners especially closest to where the filament feeds from you can get a kink causing the filament to snap in the tube. By removing the lid and having a relatively small cross-section of the print and the print being centered on the bed I had no issues with this. This filament looks incredible with a slight metallic shine and at 0.16 mm layer heights it looks like a single uniform piece of material. The filament was dry straight out of the mylar resealable bag that it came in, though I did run it in a standard filament warm box at 55° c for around 2 hours but noted the humidity was stable at around 14%. Because the filament came basically dry the print was incredibly dimensionally accurate, again noting the fact that I did not do any specific changes to the printer since it arrived. I think this is going to be my go-to budget high-end filament for the time being except for Prince that require lightweight or low density.
L**O
Kann das Material sehr Empfehlen! Lässt sich Super drucken. Sehr gute Qualität!
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