Polymaker Fiberon PET-CF17 Carbon Fiber PET Filament 1.75mm, Black, 0.5kg

First off I needed a rush order for a client of Black PA6-GF originally but Bambu Lab takes sometime to get so while I wait I figured I can try this out. I’m seriously impressed, not only did it adhere solid and strong to a G10 plate even with releasing adhesive. But it’s seamless on the layer adhesion and rigid AF! I love Bambu Lab PAHT-HF but it’s a pain if you don’t have perfect chamber temps and has very potent fumes. This PET-CF17 didn’t have nearly as much but still you need filtering. I downloaded their Bambu print profile and sent it! Worked first try with a 40c chamber, 75c Bed temp, 300c nozzle (Modded X1C with Panda Revo 0.4mm ObXidian) no AUX fan and printed flawless with ZERO WARPING! I don’t think I even needed a brim honestly. It’s extremely brittle! So be careful with loading and make sure to have smooth transitions in the PTFE lines. I had this loaded in the AMS as well and had zero issues! The texture on the surface finish is astounding and feels just like the competition. For only 500g’s I’m pretty happy about this product and definitely hope polymaker releases some other color options with their Fiberon Line. I wanted PA6-GF but it’s only available here in gray… I was hesitant trying this but it’s going to be a solid go-to option from now on! I think I’m going to buy the PPS-CF20 next! Trust PolyMaker they’ve been in the game long enough!!

This is BY FAR my favorite brand of PET-CF. Very easy to print, none of the 20+ rolls I've purchased have ever tangled, extremely strong parts and layer adhesion. If you have a dialed in printer you can almost make the layer lines invisible. So it looks amazing in the satin black. If you're looking at other PET-CF, I guarantee you this is the best brand of commercially available stuff. Only complaint is I with it was 1kg rolls. Oh and virtually ZERO nozzle clogs that weren't self inflicted. Most other PET-CF clogs in 0.4mm nozzles, this stuff will wear out you nozzle before it clogs (if you have the temps & settings dialed in)

Great value. Not too hard to print and looks great. Just make sure you dry it!

The matte carbon finish hides every seam, parts look injection-moulded from a couple feet away. Impact resistance is noticeably higher than straight PETG. No stringing or clogs (I did dry it to be safe 8h at 65C). Odor is faint and inoffensive, far lighter than ABS or nylon. If you need stiff, good-looking engineering parts this filament delivers. Side note: I did have clogs with a 0.4mm nozzle, I'd recommend 0.6mm.

EDIT: I found out my problems printing were because the filament didn't come dry. After drying at 85º for 12 hours, it prints AMAZING and fast. The reason the parts felt so abrasive was because the wet filament was foaming and the water inside was bursting the printed plastic. After drying, I used orca slicer and have really gotten this tuned in using its built-in calibration tools. I have noticed that this filament put a lot of wear on my extruder gear, probably bc I am printing at fast speeds, almost as fast as Prusament PLA. On my Prusa MK4, here are the calibrated settings that I am using: With 0.4mm ObXidian MK4 Nextruder Loaded into printer as a PA 275-285º Print Temp 80º Bed 13 MVS 1.092 Extrusion Multiplier/Flow Rate Standard MK4 Retractions 0.7mm Used a glue stick for larger parts with no enclosure The part in the phot is a nextruder wrench, and printed with 3 perimeters and 15% gyroid infill took 33 minutes to print at speeds as fast as 170 mm/s someone on reddit said that most CF filaments have fibers microscopic fibers that irritate the skin, and I think it's possible that this one does. Prusa claims their Prusament PC-CF was tested and doesn't harm the skin. I also want to say how impressed I have been with Polymaker support, because after complaining about the filament before I realized that it needed to be dried, they offered me a coupon for a replacement roll. FIRST REVIEW (3 out of 5) I bought this to replace PETG-CF (Colorfabb XT-CF20) which has a beautiful matte finish, but prints very slowly and with lots of boogers. This pet-cf prints fast but is very scratchy and uncountable to hold. The parts feel like they get fiberglass in your fingers or like they make small cuts. Maybe annealing at 100º for 24 hours like recommended would make it smoother but that's a pain.

Great quality. This stuff is expensive, if they offered 1kg spools, I would be a lot more inclined to purchase more often. Moving to PA12 CF to replace this as it ends up not being that much more expensive per KG and is more convenient.

Very good print quality, great adhesion and very strong. I used it for structural parts for small CNC I buit and they hold well.

Probably one of the best materials I have printed with. Smooth, fast, and no issues when printing with my Bambu X1C. Prints better than most PLA+ or PLA Pro.

this filament is awesome! Make sure you print at 300 degree and this stuff looks amazing, no print lines and strong as can be! WIll be making this my go to CF filament!

The Acquisition I bought the Fiberon PET-CF17 because I wanted a new challenge. The truth is, I wanted to feel important. Regular PETG is for printing toothbrush holders. Carbon Fiber Reinforced PET is for printing structural components that absolutely, under no circumstances, should ever fail, even if subjected to the gravitational pull of a small moon. The 0.5kg spool is a cruel joke. It’s like selling a sports car with a half-gallon gas tank. The moment it runs out (usually at 98% completion of the most critical piece), you realize you just finished spending $30 on a single, extremely rigid failure. Stability and Stupidity Polymaker talks about "Excellent Stable Stiffness." They're not lying. I printed a simple desk foot. Before, my desk wobbled when I typed. Now, my entire house wobbles around the desk. This material does not yield. It does not forgive. I tried to break a test piece by hand. My hand now requires medical attention, and the test piece has a mild smudge. If you ever need to print a component that must survive a nuclear winter and the subsequent rise of the robot overlords, this is your guy. I’ve started using my failed prints as small, strangely geometric whetstones. The Abrasive Tax Let's discuss the price of admission. The carbon fiber bits are there to reinforce your prints, but they also function as a tiny, internal demolition crew for your hardware. If your nozzle isn't hardened, it will be excavated. You'll spend more time replacing components than actually printing. I now own a dedicated, climate-controlled, sealed container just for this spool. I talk to it in hushed tones. It's not a filament; it's a petulant, high-maintenance ingredient that demands respect and a diamond-tipped nozzle. What I Printed (And What I Should Have) The official use is for Jigs and Fixtures. I printed a custom phone stand. A phone stand. It could probably withstand a drop from the International Space Station, but it holds my TikTok machine perfectly. I also printed a decorative chain link. I can now tow a Ford F-150 with a piece of plastic that weighs 2 grams. The prints come off the bed with a beautiful, dark, industrial finish that screams, "I am a professional engineer and definitely not a person who spent three hours trying to level their bed this morning." Final Verdict Pros: Strength: Unnecessarily, hilariously strong. Aesthetics: The matte finish is gorgeous and makes prints look expensive. Bragging Rights: You get to say "carbon fiber" a lot. Cons: Nozzle Cost: It’s a recurring expense, like a subscription service for hardened steel. Volume Anxiety: 0.5kg is never enough. Summary: Only buy this if you’ve run out of structural weaknesses in your life and need your 3D printer to introduce some. Be prepared to upgrade your entire setup, but enjoy the strongest damn phone stand you'll ever own.

Wanted to try this because it is 1/2 the price of the bambu version. And I'm very happy with it, printed easy, nice matt surface finish. I just missed the fact that this filament HDT is 148C, were the Bambu is 205C. There lies the price difference, totally worth it.

I've made an air intake for my car and after an hot summer and a cold winter, there are no cracks. Impressive!

Make sure to dry it before use. Mine didn't even come in a vacuum sealed bag...