Carbon Fiber PETG

Carbon Fiber Filament

$5.50 USD

*Now available in PETG!

Sitting comfortably between Carbon Fiber PLA and HTPLA from a price and performance perspective, Carbon Fiber PETG is a durable and forgiving general purpose material.

PETG-CF7 adds just enough Carbon Fibers to increase the stiffness of PETG without feeling brittle. Carbon Fibers also improve dimensional stability and look great!

Protopasta PETG benefits include:

  • quality ingredients plus in-house processing for curated chemistry
  • up to 75% recycled content refreshed with new PETG
  • minimal packaging with recyclable cardboard spools
  • processing from 210+ C @ 2 cu mm/s volume rate, 70+ C bed
  • prints like new PETG with larger, more forgiving process window
  • less rigid than PLA and HTPLA for more flex before break
  • more heat resistance than PLA, but less than heat treated HTPLA

Technical Data Sheets

Technical data sheets available for download here

Safety Data Sheets

Safety data sheets available for download here.


We provide a number of domestic shipping options within the United States via UPS, including free shipping on orders of $50 or more. We also provide international shipping via DHL Express.


At ProtoPlant's discretion, returns and replacements will be accepted within 90 days of purchase.  Please check the material label before opening your product.  Only sealed product can be returned. Shipping of items for exchange or refund is paid by the customer. More information about returns and replacements can be found in our terms and conditions

Customer Reviews
4.8 Based on 5 Reviews
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Filter Reviews:
Gregory H.
United States United States
I recommend this product

Excellent Material

This CF PETG is probably the nicest looking material I have ever printed with. It is easy to work with, no detectable warping and a truly amazing as printed finish. This material has become my go-to filament for basically any print that doesn't require a specific material.


Protopasta, Filament by Protoplant

Great to hear! Thanks for sharing Greg!!!

Aaron C.
United States United States
I recommend this product

Carbon Fiber and PET-G seem to work very well together

I had some extra spending money from the holidays, and for me that means splurging on some nice filament. I bought a 1 kg roll of this filament, and I think I'm going to be getting more in the future. The printing quality is fantastic. Extrusion is consistent so I can assume that there is very little variation in the filament diameter. Being filled with carbon fiber, prints also have the characteristic sparkling or shiny finish associated with CF-filled materials. Additionally, the filler helps cut down on PET-G's gloss.


Protopasta, Filament by Protoplant

Thanks for choosing and appreciating what make! All our best to you!!!

Raven W.
United States United States
I recommend this product

Awesome Material

I use the CF PETG to manufacture products for my company and it has provided superior strength and print quality compared to other PETG materials I have used in the past with the same print settings. Buy with confidence

Joe L.
United States United States

My new go-to PETG!

I received a 500g roll of this with the PETG Endless Pastabilities. I was hoping that, like with their CF PLA, Protopasta would make a definitive CF PETG. I am happy to say, the material has met my expectations. I will be keeping a roll of this on hand for the foreseeable future. It prints well, and the prints themselves are comparable in overall rigidity to normal, unfilled PLA, which for PETG, is amazing. Also, the Carbon Fiber fill does wonders for warping, and I can print thin-walled objects without noticeable bowing.

3D F.
United States United States
I recommend this product

Excellent Filament

Something about adding carbon fibers to plastic filament makes the printing exceptionally easy, and Protopasta's rCF-PETG is no exception. We had been printing with virgin material for some time, but after hearing about this recycled option, we decided to switch. Printing at 235C hotend and 90C hotbed, we have had exceptional results. Stiff, sturdy, and easy to clean up. We are marking one star off because Protopasta does not include holes to hold the filament in their current cardboard spools. This is a poor design meaning that we have to add our own to keep the filament from unspooling. That one change would elevate their filaments greatly.


Protopasta, Filament by Protoplant

Thank you for your positive review and maybe with a little additional information we can earn 5 stars? The corrugation is also a filament holder! You can see this in our product photos and on our getting started page :-)

Free Domestic Shipping

Free shipping in the lower 48 + DC over $49.

International Shipping

Live outside the U.S.? We ship all over the world!

Support from the Source

Expert, in-house support from Protopasta makers.