IEMAI Carbon Fiber Nylon Filament 1.75mm, Black PA6-CF 1kg Spool, High-Temp & Wear Resistant, High Strength & Rigidity 3D Filament for Functional Parts & Industrial Tools

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'.

Update: As I asked them to do, they have removed the claim of 150c TG temp and replaced it with a more accurate 80c. With that in mind this filament is a definate 10. Super strong and printed awesome with the settings below. I would order it again. Updating my review from 3 to 5 stars.KEY- .6 nozzle (or larger) with ANY Carbon Fiber filament. .4 nozzles WILL CLOGOriginal Review: PETG CF - Quite strong prints, very sensitive to print temp.Strings at 240c with .6 nozzle, but fine at 230c.Will not resist 150c temp as previously claimed, as it softened in the oven at 80c. (180f).No better than standard PETG in that respect.Excellent quality prints as follows:.6 Hardened steel nozzle.72 layer width (nozzle x 1.4).16 layer height80mm/s speed.5 elephant foot compensation for 5 layers230c print temp.Excellent print quality and strength, but forget about high temp use. Go to PC-CF for that.Good Luck!

I have printed more than a dozen parts with small but very difficult overhangs with this PETG-CF and every part has come out wonderful. I did dry it in my own food dehydrator-turned-filament dryer. Along with a few more visits to the dryer along the way. I have no humidity control in my house so I felt the need to do this just in case. Other than that prints looks great, no layer lines, no adhesion issues as long as the plate is clean and glued on smooth or no glue on textured. I am using a P1P and printing at a max volumetric speed of 15 mm/s. As with all PETG-CF filaments I have tried (which is 3 or 4) - they are a labor of love. You MUST calibrate, you MUST dry, you MUST use a z offset of 0.03-0.05, you MUST have your fan speeds dialed in specifically for this stuff. I print alot of parts with circular dimensions and chamfers/filets. This is very hard to print correctly but comes out great when you've sliced it just right. Don't hesitate to buy this. It did not melt in my dryer like some have said but maybe that was older spools. The spool itself is fairly flimsy but does the job so I don't really care. I dried at 65c for 6 hrs.

It prints as well as any PETG I've used in the past. The prints come out looking great. The only issue I have is the length between color changes. It's very slow to change to the next color. I can print fairly large items that have no color change at all.

I love this filament! Printed on an AnyCubic Kobra 3 Combo printer. perfect print, light and strong with very nice matte finish. Be sure to use a hardened nozzle as this stuff is abrasive!

I am a big fan of this brand, it prints beautifully and often quite strong however all the rolls I buy from this brand have inconsistent diameters that cause it to jam in my printer.Diameters as large as 2.11 mm. A far cry from the claimed 1.75mm.My printer has custom fittings that can handle up to 2.00 mm but this filament is such a failure of quality control that I’ve had to unjam it by disassembling my entire printer. Sometimes as much as four times in one day.Currently my only solution is to buy another brand as I’m not willing to modify my printer even further to compensate for the drop in Quality Assurance from IEMAI.

Some in the 3d printing community may call this filament junk or fake. From my personal experience, this is a great filament at an economical price. I haven't been able to validate the listing's claim of 147C HDT but I can say it holds up to heat well compared to other PC-CF filaments I've tried.Like most GF or CF filaments, it gives your parts a beautiful appearance. in my tests I found printing at higher temperatures such as 300C (Hotend), 130C (Bed) and 80C (Chamber) yielded warp-free parts with good layer adhesion. When printing at the lower recommended temperatures however, I did experience layer adhesion issues, so turn up the heat if you can. I would NOT recommend this filament for a non-enclosed printer.

UPDATE: i use a 0.4mm hardened steel nozzle without any issues. the stuff prints amazingthis 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

Sin problemas de deformacion y buena adherencia no utilize cama de vidrio y con laca

Buen filamento, mi primera vez usando PETG (siempre imprimo en PLA) y lo primero que he notado es que no funciona bien con las temperaturas que indica ( lo uso a 250 grados hotend y 90 grados base de impresion), se debe imprimir con velocidad de ventilador muuuy baja y a velocidad de impresion lenta en general (30 mm/s cuando mucho)Al final es bueno, resistente y bonito (ideal para imprimir cosas mecanicas) pero dificil de manejar para principiantes.

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.

Muy buen filamento y excelente acabado