PETG Filament 1.75mm 2025 Upgrade Spool Compatible with Bambulab Refill Filament, 2kg(4.4lbs) SUNLU PETG 3D Printer Filament, 1.75mm Dimensional Accuracy +/- 0.02mm, Black+Black Bundle

I love this filament. For PETG, it prints amazingly smooth with little to no stringing. It prints better on my BL A1 than BL's own HF PETG.I had recently sworn off buying filament from SUNLU because the fiasco that was their old "reusable" spools, which I could never find any refills for. But when I saw these pop up with their newest spool compatible with BL refills. I was pulled right back in!For the money, you really cannot beat this filament. Heck, buying a reusable spool by itself from other manufacturers costs almost as much as buying a full spool of Black PETG from SUNLU. So, really its a no brainer, almost like free filament.Please SUNLU, adopt these spools for all your filaments, and please please start offering refillsEdit: Okay I just had to come back to talk about something I just learned (that may be obvious to other people, idk)The design of these spools are super cool! Aside from being compatible with BL refills, the "windows" in the spool extend past the cardboard center the material is spooled on. This is done purposefully so if you want to use that spool for a different material you can easy insert a cable tie or some velcro beneath the cardboard spool and wrap it around your remaining filament. Then you can easily remove that refill spool and use another. Of course this isn't something you'll be doing all the time, but it comes in handy in a pinch!

This stuff prints quite well. There seems to be a slight change in PETG formula which might cause it to print slightly expanded, and might have slightly higher ductility which could lead to deformation while twisting , but after testing extensively I determined it was my model instead of the filament that was my main issue. That said this spool arrived with only 800 grams on the spool while it was marked as 1kg. Contacted the seller and they quickly resolved the issue. Great job on the sellers part resolving my issue.

Why did you pick this product vs others?:The Sunlu PET-G filament is one of the best I've found to date. I use it with my Bambu P1S printer & the filament prints beautifully, adheres to the bed without warping, and really yields a great print. Spooled nicely and feeds through the AMS unit sans problems.

First set i bought worked for a few prints but kept getting clogged. The company reached out to me about the issue and gave me new filament. The new filament worked great! After I cleaned up everything again, and tried it out. Got pretty flawless prints and 0 clogging! I did several prints and it worked great! Def had to change some of my settings after changing brands. My filament worked best extruding at 245 degrees, where as I’m use to printing at higher temps for other filaments.Also, as a note for any first time printers, made sure your end tip is copper, not brass. PETG will pretty much always clog up brass.

Carefully dried and calibrated using Orca Slicer, the Black version of this filament on X1C.Flow Ratio: 0.928Min Temp 240Max Temp 260Temperature: 250K-Factor 0.0370Pressure Advance 0.032Retraction Length 0.5000Bed Temperature 70Volumetric Flow Rate 12X-Y Hole 0.05X-Y Countour 0Fit Value 0.05 (the hex peg fits 0.05)With these settings, X1C can print "Torture Calibration Cube" (from Printables), where all elements move well. However steep overhang sagged compared to Yoopai Creality PETG black. The flow rate can go to about 17, but real prints suffer from artifacts.Filament is shinier than usual and shows all VFA artifacts on the walls.I really liked Yoopai created Creality black PETG, which was phenomenal and wanted to find a replacement from the same company, but this is very different (in SUNLU box).The spool looks great and will be reused many times in the future.It would be great if manufacturers created profiles for all popular printers; otherwise, half a day is lost calibrating every new material and colour (different colours usually result in quite different calibrations).

Bought this dual package for the price and I'm very satisfied.Sunlu usually makes good quality filament. I needed some PETG for a project and used these two filaments with satisfying results. Great paean, no errors, very clean filament with no tangling.Practically every PETG filament needs drying before use. Not with this one, it printed awesome right pout of the package.

This PETG prints well and I like that they changed their spools to a larger size than the old blue reusable ones these no longer rub on the bottom of the AMS or ace pro so that’s a nice feature and the PETG itself print very nice And is strong. It can handle quite a bit higher speeds than normal. PETG.

Why did you pick this product vs others?:I pick this one for 3 reasons. 1, great reviews. 2, price. 3, reusable spool.Unfortunately, i have yet to be able to get a solid print out of half the damn roll. Filament quality:Ladies and gents, the filament itself was filthy. Not the packaging, the filament... INSIDE THE SEALED BAG was covered in dust. Had to respool and wipe it down with IPA. Figured that would be enough.Moisture level:After 5 days in the dryer, its still at 30% moisture and that is with a handfull of new dessicant packs. It was 45% at its peakClogging:because the moisture and probably the dust, i have yet to be able to get a full print out. Print quality:Wouldnt know...Honestly, if i hadnt blasted througj half the roll trying to trouble shoot it, i would have already returned it.DONT WASTE YOUR MONEY!