IEMAI PC-CF 3D Printer Filament 1.75mm Matte Black 1KG, Carbon Fiber Reinforced Polycarbonate Superior Strength & Rigidity, Impact & High-Temperature Resistant for Industrial Parts

This filament is awesome. Honestly, it prints better than regular PETG. Yes, PETG alone is slightly flexible, but the introduction of carbon fiber changes all of that. Prints are stiff and strong, but there is a tradeoff in that prints are more likely to shatter if dropped or hit. This filament is so stiff that caution should be used when processing prints, so that you aren't cut or stabbed by your print. If you heat up your nozzle and pull off the ooze that forms, you pretty much have a needle, once it cools. This filament likes lots of cooling. The more air hitting the part, the less "foamy" the resulting print looks. It took me a bit to realize that it was the cooling that was causing my prints to look the way they did at first, and not an issue with my print temperature. Parts printed with this filament have a matte finish that helps hide print layer lines. The CF completely removes the shine of normal PETG. Order a spool and try it out...you won't regret it. This brand is also the cheapest I've seen on Amazon...great value for what you get.

I'm on my 2nd kilo of this PC-CF and I've got to say, I (mostly) love it. I've printed 2 V-Spoolers with it - one original, one of the larger X models, as well as a Pastalite respooler (what can I say, I was evaluating options). Gorgeous prints each time. Bed adhesion and warping isn't great on its own, but adding a coat of Magigoo PC solves that. Nice, deep black color with smooth finish. Overall, solid quality stuff. Like most filaments of this type, please dry it before you start using it and store it in something air-tight. Make sure your chamber is heated to at least 40-45C before sending the job. Prints great on my X1C.

I was impressed with this glass fiber PETG it’s the best I’ve tried, for strength and reliability. The extrusion is super consistent, with no clogging or stringing issues, and every layer bonds perfectly. It’s noticeably more rigid and harder than other PETG-GF I’ve used before, but still easy to print. There was no brittleness and no warping. The finish was clean. I’ve made a set of precision instrument parts, and the tolerances were spot on. Great choice for industrial, automotive, or drone projects. Would recommend to anyone.

Tried this on a 3D2A application, 45ACP. I was very pleased with the print quality and final appearance . Supports using my Qidi Q1 Pro came off fairly easy and clean. It was very stiff, so if you need a filament for static non-impact use it may be OK. 25 rounds and I had a cracked frame. Dried at 50C for 8 hours out of the bag. Printed at .12 layer, 60mm/s, 10 walls, 260 nozzle, 90 bed with PVA glue over PEI. For the price- below most PLA+ filaments-, this is good to have on hand for various other projects. Visiting their website, I see the company makes a variety of others, so I'll probably try another nylon variant.

EDIT: I'm leaving the below review so folks know just how much this has changed. I have ordered MORE THAN 25 ROLLS of this filament, and IT IS NOT CONSISTENT BETWEEN ROLLS if it will be AMAZING or ONLY OK. They recently sent me the best roll I've ever used, and since then it's been crap twice. I'm out. IF THE ROLL YOU GET IS DARK GRAY, COMPLAIN AND SEND IT BACK. IF THE ROLL YOU GET IS PURE, PITCH BLACK, IT'S A GOOD ROLL. The dark grey rolls are comparatively CRAP quality, and I KEEP getting them! The PURE BLACK rolls are OUTSTANDING. I've contacted support and complained, and I WILL post all info here AND any other public place I can think of. I 100% guarantee it's because they're buying and reselling rolls from other companies, I just wish I knew which companies so I could buy from the GOOD one, NOT the bad one, and bypass these guys entirely! ON TO THE OLD, GLOWING REVIEW BELOW, WHICH ONLY APPLIES FOR PURE BLACK ROLLS OF CF-PLA; IF YOUR ROLL ARRIVES LOOKING DARK GREY SEND IT BACK!! They aren't unusable but they're NOT the quality I'm reviewing! I've been buying the same brand of CF-PLA for a few years now. They were out of stock, and this (IEMAI Carbon Fiber PLA) was both cheaper and in stock. (EDIT: Eight spools deep. I'm not going back.) For context; I print exclusively functional parts, not figurines etc. Print quality is outstanding, dimensional accuracy seems very consistent. Very low to no stringing. It handles vase mode prints very well; 8mm dia x 30mm length test pins printed very quickly (~80mm/sec actual) with no flaws. It bridges extremely well with high airflow -- honestly I've never seen better bridges from my printer. Info on my setup; - Extruder is a custom dual-drivegear 3:1 non-bowden extruder, hardened steel nozzle, 0.5mm bore, 0.3mm retract at 40mm/sec, heated to 223c - Bed is glass, coated with a light mist of hairspray diluted to a thin layer with a coat of water from a spray bottle, heated to 57c - Layer heights are usually 0.2mm or 0.25mm, outliers at 0.15mm and 0.3mm - Print speed began around 60mm/sec~90mm/sec with ~1500mm/sec^2 acceleration, but recent improvements and tunings has it closer to 90~120mm/sec @ 3500mm/sec^2 with 0.2mm to 0.3mm layer height, with negligible notable change in quality. It carves well if required, it drills well (unless you get it hot, obviously - it softens at a lowish temperature compared to hotter filaments, due to the PLA blend) and as stated it retains flawless dimensional accuracy. Ironed top surfaces look fantastic, and parts have a very satisfyingly solid sound when impacted. Side surfaces are smooth but grippy, a bit rougher than my normal brand of CF-PLA. I'll update this bit as I order more rolls, but thusfar: I've ordered eight rolls to date. I made no adjustments between rolls, and prints remained flawless with the exception of; - The first print or two (~100g) from the first roll had occasional blockages which self-cleared within the same layer; I'm willing to attribute that to possible contamination on my end. - The first few meters of the fifth roll, which needed a 5% feed reduction for 'perfect' surface finish. - One nozzle jam, less than one meter of filament from the end of the sixth roll. Would've killed the print, but it was on the final, small area on the very top layer. Cleared with cold pull at 150c. - Roll seven (Batch No 20221017ZD) had (to date) four clog issues which caused failed prints. Two abrupt, complete blockages fixed by hot-pull with no cycling after print cancel. Two partial blockages, one fixed via hot-pull, other fixed via cold-pull. I'd be more upset if these weren't non-final prototyping parts. - Most pics are before resonance tuning, so their surface finish isn't flawless. I also had some frame stability issues causing irregular layer height, which have been solved. - The ironing finish is astonishing. I've added three shots of 1mm thick, 115mm long vanes from an airflow project, with an ironed top surface. Ironing was 0.125mm, 20% flow rate, 30mm/sec. Lines are (BARELY) visible at this setting and using a 0.5mm nozzle; for perfection I would suggest 0.1@25mm or so. I'm not aiming for visible perfection with this project, so this is not an example of attempting such. - Also, three additional pics of the underside of the same vanes - I literally forgot to enable supports for the underside of a dead flat, unsupported, 2mm deep, 115mm wide overhang. It's tiny so it's impossible to get better pics, but it printed, perfectly. 500mm/sec bridging acceleration, 60mm/sec bridge speed, 0.98 bridge flow rate. I've honestly never seen anything like it. - I printed the auto-rewind filament holder, including the clutch and springs, from CF-PLA. I'm shocked to say, it has good spring-like qualities due to the TPU additive in the base blend, and the CF-on-CF clutch seems to be surviving very well so far. My extruder gearset is also printed from CF-PLA, and doesn't wear like I had expected -- this one gearset has lasted at least 12kg of printing so far. Sum total; seven rolls (~7.5kg by filament tracker) printed on one hardened steel nozzle (so far). Five failed prints from the same roll. No filament-derived bed adhesion issues. No layer adhesion issues. No significant diameter variances or other visible/brittleness problems with the filament. Roll seven aka Batch 20221017ZD has given me the most problems. If my experience were based on this roll alone, it would be three stars. Thankfully, I do know better. This is still 'my brand'.

I’ve been printing with several brands of PETG, but this PETG GF from IEMAI really stands out. The glass fiber PETG formula gives incredible rigidity and dimensional stability, perfect for functional parts. Printing was smooth with zero stringing, no clogs, and absolutely no bubbles. The material isn’t brittle at all and handles stress really well. I used it for an automotive bracket and a drone frame—both came out strong and precise. Highly recommend for industrial and precision applications.

UPDATE: i use a 0.4mm hardened steel nozzle without any issues. the stuff prints amazing this is the first time i ever printed in anything other than PLA, PETG, or TPU. i needed a functional strong part for an e-scooter that would be exposed to the elements and thought now would be the time to get a better filament. it was relatively easy for me to get it going and i did not have to do much to get printing. i have to say it is easily the strongest filament i've ever used. where PLA just easily snaps and breaks, this holds up. it can be more brittle when it does give way, where PLA is more likely to flex. the bed adhesion is not good, as is to be expected. this is countered with a heated enclosure. I do not own one so i used about 3 candles inside with a small opening for fresh air. this allowed me to get enclosure to about 33C. put pre-heated the bed, removed filament from packaging and placed it back inside the box, inside the enclosure on the heated bed, for 2 hours before printing. i printed with bed at 110C and nozzle at 285C. I would have used hotter nozzle temperature but i couldn't for the life me get the printer higher than that (even with modifying the firmware). Even though I didn't get it as hot as i would have liked, it still held on and bonded nicely. only downside is that i ordered black but it appears more grey than black. very happy with the filament

La qualité d'impression est excellente. Aucun fils d'ange (stringing). Très bonne adhésion sur le plateau et tout se décolle très bien quand c'est refroidi. J'ai imprimé avec les températures indiquées sur la bobine avec une creality k2 plus. Vitesse d'impression 80 mm/s. J'ai fait sécher la bobine 12 heures à 65 degré C. C'est Une merveille d' imprimer avec ce filament. Les propriétés restent à voir. Je recommande fortement ce ASA-GF.

This filament snaps in your fingers with no effort and is not close to the black it shows. Prints grey colour although finished prints look nice they snap easily. Regular ABS from better companies is a much better choice than this. Plus they never responded when i mentioned this to them.

This filament prints really well, delivering strong, durable parts with excellent heat and weather resistance—perfect for outdoor use. I've been using it for a project in my cars trunk. Just be sure to keep it dry, as it can get brittle and snap if exposed to moisture. Overall, a great filament for functional prints!

I grabbed this red roll of PLA-CF as it was on special for a great price. Being unfamiliar with this manufacturer, I wasn't expecting legendary results and planned to fight with settings and issues. After unboxing, I placed the roll of filament in a Sunlu S2 dryer for 10 hours and walked away. The next day I setup my Bambu X1 Carbon with a 0.6 hardened steel nozzle to prepare the print job shared in my photo. Not wanting to take any chances with the filament snapping off inside the AMS unit, I fed the filament directly from the dry box to the back of the printer and into a 4-in-1 splitter from Bambu Labs. Several hours later, the bird house structure you see in the photo was complete. There was absolutely zero stringing, no tiny air bubbles in the walls, no issues with adhesion and best of all, the colour and texture was on point for what I was hoping to achieve with the print. A layer height of 0.18 was used with the 0.6 hardened steel nozzle, nozzle temperature of 230C and a textured bed temperature of 65C, lastly retraction was set to 0.8mm. Note: I bought the green version as well but have only printed a benchy so far - it turned out great as well. Would buy again.