3D BEST-Q GF-PC (Glass Fiber-infilled Polycarbonate) White 1.75MM 3D Printer Filament, N.W. 1KG, Hight Hardness&Toughness （White）

I am printing this on a modified I3 mega with an E3D V6 and a 0.5mm hardened steel nozzle. I had issues with a lot of clogging at first with my retraction at normal levels. No clogs with retraction turned off and have had good results with 2mm retraction. It’s not super stringy. I have had good layer adhesion at 280c and 90c on a PEI bed. It sticks well so print it with little squish on the first layer like PETG. If you squish it it won’t come off. Also it will not come off easy with the bed over 90 degrees, but when it cools down it comes off perfectly.

If you worried about it sticking to the bed - don't. I actually had to replace my PEI sheet on MK3S bed after my first print and that was without any type of ABS juice, tape, glue or anything. I actually use tape now, not to get it to stick, but for ease of removal. Make darn sure you let us cool down to ambient or you will destroy your part and bed trying to remove.The strength is awesome. I would venture it is stronger than Nylon 6 and quite a bit more than ABS. I have abused it, beat it, bent, stretched, smashed and it handled it all in stride. I print with an initial setting of 268/100 C nozzle/bed temp, going to 270/110 after the first (3) layers. that seems to go on well. I love this stuff. It is pricey, but once you learn how to work it, it makes extremely durable prints. Just keep it dry!!

UPDATE 5/25/2024: I was deciding on a spool of PC since my current spool is about done for, and though the spool printed fine, it wasn't bad, but not impressive. So I am reading this review.. yes, this one. I started thinking to myself "Huh, I'm gonna try it (going for the PC-GF this time)... Wait, I have that same printer! Wait.. I wrote this review!!!" So, uhhh... I guess I sold myself on yet another spool from these guys. Regarding the odor problem, the next spool was better, but I've since learned that PC-CF does have a stronger odor than PC.UPDATE: After contacting the manufacturer/seller about the strong odor, they agreed that it should not be a strong odor as I smelled, and sent me out a free replacement immediately. I received it today and will try printing with it again soon. I don't want to break the package seal until I'm ready to use it. I will update my review again once I have tried the new spool, but the seller customer service was great and concerned with customer satisfaction. I hope the odor was a one-off, because it is a great filament otherwise.NOTE: I would highly recommend buying cleaning filament (I got mine here on Amazon) to clear out your nozzle when changing from this (or any abrasive) filament, and of course, use a hardened steel nozzle. Any filament with fiber fills (and even powder type fills as well) are very abrasive and can leave behind some buildup or traces in your extruder/nozzle assembly.First off, I'm giving this a 4 because of one basic misrepresentation in the description; the odor. It has a strong odor when printing. Even from loading it at 220c. I print enclosed with an air purifier on max right next to it, but the odor is definitely strong. As strong as ABS in my opinion. I had to double check that it wasn't ABS that I loaded. It could just be the CF fill. I will contact the seller about this and update my review.That aside, I'm currently doing my first print. So far, with 275c nozzle and 95c bed, 0.4mm hardened steel nozzle, FF Guider 2s HT hot end, and no cooling, it's coming along great. I see no signs of warping and layer adhesion seems great. I will update after the print, but I wanted to get the post about the odor right away. Definitely suggest ventilating the area.

Amazing product for the price. It's the same exact product as the PRLINE PC-CF, no difference, easily recognizable, same spool, same label, same product. I have printed through at least 6 spools and I get quality prints every time. Needs to be printed really hot, 285c Hotend and 90c Bed yields the best layer bonding and bed adhesion for me.

Worst filament ever never could get a clean print I spent months trying to get a clean print ended up giving up and tree it away total waist I have lots of practice using all types of materials and running 3d printers but this would not work

I've gone through a few rolls of this filament, but I've had so many functional parts break prematurely that I won't be buying any more. There's no comparison between real polycarbonate or Polymer PC Max and this when it comes to part strength. I'm currently replacing some parts printed in this with standard ABS.This filament needs to be printed very hot to get even decent part strength. It is also very sensitive to cooling fan, and should be printed very slowly with little to no part cooling. Parts with thicker cross sections seem to do fairly well with this, but anything that is thin-walled will be prone to premature cracking along layer lines. The one thing that I will give this filament credit for is exceptional surface quality, along with good bridging. It produces some really beautiful parts, but you really can't rely on them to remain in one piece.

Our company has been trying a MYRIAD of different types, brands and styles of 3D filament for more than a year in our efforts to produce a reliable marine propeller for inclusion in a product that we manufacture. We have tried PLA. PETG, Nylon, acetal, ABS, straight and/or infused with glass, carbon fiber, etc. -some of these "specialized" filaments were almost $100/spool. We tried numerous printing variations with each filament too. During testing, all of the other filaments we tried, either the prop's would immediately blow up or would eventually fail via cracking or breaking along print lines. Nothing was working.We FINALLY found 3D Best-Q carbon infused polycarbonate. It's tough stuff. Pretty easy to print with and the side benefit is a really cool- kind of, "ominous" matt black finish. If you been tearing your hair out trying to find a filament that's truly exceptional, try this!

This prints at PETG temperatures, flows just like PETG, adheres to build plates just like PETG (not great without PVA), and flexes just like PETG. I don't see how it could possibly be polycarbonate.

The media could not be loaded. Totalmente satisfecho con este filamento:Imprimí con 26º boquilla de 0.5mm96º cama caliente y sin ventilación.Se pega super facil a la placa y se despega sin ningin problema,es un material super resistente y super amable, desprende un ligeroolor quimico, me recuerda a la pintura vinilica y también desprende ese oloral abrir la bolsa.Venía sellado al vacio 100% y francamente estoy encantado con este material.Muy agradecido.