Siraya Tech Fibreheart PET-CF 3D Filament - Carbon Fiber Reinforced, High Strength & Rigidity, Easy Print, Dimensionally Stable, Aluminum Foil Sealed Bag - for Strong and Precise Parts (Black, 1kg)

Excellent Filament. Prints easily, minimal warping compared to pure ABS, super stiff, but still has good layer adhesion. Probably my new go-to for temperature resistant functional prints. Much easier to print than regular ABS/ASA, and the added glass fibres give a really nice exterior finish. Remarkably low odour too; Forgot to turn on my carbon filter and was quite a while before I noticed any smell. The only critique, which is a common issue with Siraya Tech, is that the spool is wound almost to the edge. Very neat windings, but unless there's constant tension on the spool, it's quite easy for a few loops to come off, at least until you've used a couple 100gs. Not really that big an issue though, and definitely still one of the best ABS filaments regardless. Great value too. I should say, the bed adhesion is almost too good. I normally use adhesive and a hot chamber to print ABS with minimal warping, but the same process with this filament ripped the PEI right off my build plate. Not a fault of the filament; definitely user error. But be aware of this if you normally use a strong adhesive for printing ABS (Magigoo, NanoPolymer, etc.)

Really nice print quality. Needs some fiddling with print and process settings on Bambu printers but possible with some wiki work! No stringing, great value for an engineering filament, perfect bed adhesion (even without glue) and seems to have good temperature tolerance. Excellent functional filament for projects that need high temperature tolerance, strength, nutrition n-electrical conductivity and beautiful finish!

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.

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.

This filament is fantastic - I've used it to print a new rear filter assembly for my H2S, the quality of print is really nice HOWEVER, if you plan to use it in an AMS the first 10% of filament will cause feeding issues as the diameter of the material on the reel is much wider than most other filaments, check out my images below! Also the initial filament was wound terribly for the first 10/15 turns and found its way underneath other layers, maybe I just got unlucky!

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.

When it prints the results are nice, but the filament is so brittle it constantly breaks in the reverse bowden tube of my printer

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.

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。

Est-ce vraiment du filament technique, aux caractéristiques qui sortent de l'ordinaire ? Non. C'est de l'ABS avec un peu de fibre de verre, d'accord. C'est donc un peu plus rigide que de l'ABS de base, qui est une matière très souple, comme ceux qui le pratiquent on pu le constater. Les fibres améliorent aussi quelque peu son comportement, le warping est réduit, la stabilité dimentionnelle améliorée. Au final, ça reste de l'ABS, même s'il est un peu amélioré. Je remarque que le pourcentage de fibre n'est pas précisé... Je suppose donc qu'il est de l'ordre de 10%, voire 5%. On reste donc sur du filament "spécial marketing".

Super filament, nice printing on the bambulab p1s and h2s

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.

Utilizzato su Bambu X1C con piatto BIQU CryoGrip Pro Glacier: nessuna deformazione e adesione impeccabile. La stampa è risultata stabile e precisa fin dal primo layer. Ho usato il profilo consigliato disponibile sul sito Siraya Tech, e ha funzionato alla perfezione. Consigliatissimo!