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popularMaroonDeer2762 posted Jan 23, 2026 07:08 PM
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popularMaroonDeer2762 posted Jan 23, 2026 07:08 PM

Siraya Tech Fibreheart PPA-CF 3D Printing Filament - Extreme Performance 15% Carbon-Fiber Filled for Engineering / Functional Parts

$52

$70

25% off
Amazon
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One of the highest rated PPA-CF filaments by the well-regarded MyTechFun filament review channel:

https://youtu.be/nM0GR_x2iQs

I have used filament like this to print exhaust parts for my generator, functional parts for my car, among other things. Parts Clink like metal, are as light as PLA, and nearly as strong as aluminium. Easy to print on enclosed machines with a hardened nozzle. It is a fantastic filament if you have the need for extreme heat resistance and strength

https://www.amazon.com/dp/B0DKW7B6NT
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One of the highest rated PPA-CF filaments by the well-regarded MyTechFun filament review channel:

https://youtu.be/nM0GR_x2iQs

I have used filament like this to print exhaust parts for my generator, functional parts for my car, among other things. Parts Clink like metal, are as light as PLA, and nearly as strong as aluminium. Easy to print on enclosed machines with a hardened nozzle. It is a fantastic filament if you have the need for extreme heat resistance and strength

https://www.amazon.com/dp/B0DKW7B6NT

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Model: Siraya Tech Fibreheart PPA-CF 3D Printing Filament: Industrial-Grade Carbon Fiber Nylon, Superior Strength & Heat Resistance - The High Performance PAHT-CF (1kg, Black)

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Sort: Lowest to Highest | Last Updated 1/24/2026, 09:24 PM
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Yesterday 02:48 AM
3,467 Posts
Joined Feb 2008
overzeetopYesterday 02:48 AM
3,467 Posts
It's been this cheap (or close) recently, but I've been wanting to try it. My printer only goes to 295C officially, but I think it tends to print "hot" (higher actual temp than indicated) so I'm hoping it will work if I keep the speed low.
Yesterday 02:50 AM
34 Posts
Joined Dec 2011
EDUBBS37Yesterday 02:50 AM
34 Posts
Quote from overzeetop :
It's been this cheap (or close) recently, but I've been wanting to try it. My printer only goes to 295C officially, but I think it tends to print "hot" (higher actual temp than indicated) so I'm hoping it will work if I keep the speed low.
I see they have the Glass Filled a few dollars cheaper. I love GF more than CF. I wonder if it still makes that metal sound?
Yesterday 06:41 AM
172 Posts
Joined Sep 2009
AlwaysInPainYesterday 06:41 AM
172 Posts
I'm just not on board with the whole filled filament crowd. This video made it an even stronger case for me.
https://youtu.be/w7JperqVfXI?si=8PPpK9QnbYKI_3Ln
Yesterday 06:48 AM
21 Posts
Joined Sep 2016
inefficientYesterday 06:48 AM
21 Posts
Quote from AlwaysInPain :
I'm just not on board with the whole filled filament crowd. This video made it an even stronger case for me.
https://youtu.be/w7JperqVfXI?si=8PPpK9QnbYKI_3Ln
I've done stuff with industrial SLS printing and home fused filament printing, and what not- the thing I've found with pretty much all glass/carbon filled filament is that it doesn't do much unless you're annealing the print after printing. It also doesn't do jack shit for compressive strength, only shear and tension.

EDIT: nylon and other polyamides do need two things to be printed well: HIGH heat (that 300* on the box is no joke) and VERY Dry. If you don't have a dryer that can spool out while printing, you'll probably end up with stringing in a couple hours if the RH% is above 25-30.
Last edited by inefficient January 24, 2026 at 12:23 AM.
Yesterday 11:01 AM
358 Posts
Joined Oct 2010
snorriYesterday 11:01 AM
358 Posts
Quote from AlwaysInPain :
I'm just not on board with the whole filled filament crowd. This video made it an even stronger case for me.
https://youtu.be/w7JperqVfXI?si=8PPpK9QnbYKI_3Ln
He is only looking at PLA CF - this is an entirely different beast. PLA CF is for looks. You will need to get at least PETG-CF for more durable prints. And this filament is light years beyond that. And if you are concerned about filled filaments, then you have to stop using silk, transparent, glow in the dark, and everything else that is "fun and pretty" about 3D printing.
Yesterday 11:02 AM
358 Posts
Joined Oct 2010
snorriYesterday 11:02 AM
358 Posts
Quote from AlwaysInPain :
I'm just not on board with the whole filled filament crowd. This video made it an even stronger case for me.
https://youtu.be/w7JperqVfXI?si=8PPpK9QnbYKI_3Ln
He is only looking at PLA CF - this is an entirely different beast. PLA CF is for looks. You will need to get at least PETG-CF for more durable prints; this filament is light-years beyond that. And if you are concerned about filled filaments, then you have to stop using silk, transparent, glow-in-the-dark, and everything else that is "fun and pretty" about 3D printing.
Yesterday 11:29 AM
395 Posts
Joined Dec 2010
CrabsYesterday 11:29 AM
395 Posts
Quote from AlwaysInPain :
I'm just not on board with the whole filled filament crowd. This video made it an even stronger case for me.
https://youtu.be/w7JperqVfXI?si=8PPpK9QnbYKI_3Ln
Video is specifically about PLA, he even says other filaments do benefit quite a bit, although it may have been in a different video. As if I recall he did 3 videos on the subject.

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Yesterday 01:53 PM
3,467 Posts
Joined Feb 2008
overzeetopYesterday 01:53 PM
3,467 Posts
Quote from inefficient :
I've done stuff with industrial SLS printing and home fused filament printing, and what not- the thing I've found with pretty much all glass/carbon filled filament is that it doesn't do much unless you're annealing the print after printing. It also doesn't do jack shit for compressive strength, only shear and tension.

EDIT: nylon and other polyamides do need two things to be printed well: HIGH heat (that 300* on the box is no joke) and VERY Dry. If you don't have a dryer that can spool out while printing, you'll probably end up with stringing in a couple hours if the RH% is above 25-30.
Filler (CF or GF) definitely has some advantages, just not necessarily in the strength department. Often I don't need additional strength, I need stiffness. I picked up some cheap ($10/kg) PETg-CF and the stiffness increase "fixes" one of the major downsides to printing in PETg - low modulus.

In the case of PPA, it offers high(-ish/-er) temperature usage and good hoop stress (extrusion axis) strength. I'm hoping to try it out for rocket engine casings. The eSun PAHT-CF I have is brutal to print with due to moisture sensitivity but produces amazing parts. The Fiberon PET-CF I have is not as strong as the PA-CF, but the filament is so rigid I've had the filament snap in my extruder during retraction. It makes nice, stiff parts but the cross-layer cohesion is relatively poor. If the PPA can buy me another 20-30C HDT, have z-axis strength like PA, and be as stiff or better than the other two, it would be a win for the right components.
2
Yesterday 06:30 PM
99 Posts
Joined Nov 2007
funnyguyYesterday 06:30 PM
99 Posts
Please put price in title.
Yesterday 10:13 PM
79 Posts
Joined Aug 2018
LaughingSomnambulistYesterday 10:13 PM
79 Posts
in for one, this stuff seems real good (i just discovered PA-CF) as long as this prints without nasty VOCs and other chemicals.
Today 12:46 AM
44 Posts
Joined Nov 2018
NeatGuide5226Today 12:46 AM
44 Posts
Price history says it's been this price basically the whole time last 90 days. No?

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