Review on YOYI 3D Printer Filament - PETG 1.75Mm 2.2Lbs(1Kg) Spool, High Accuracy +/- 0.03 Mm, 100% New Raw Material! by Troy Coste

Quick summary: this stuff is great.First off, I do a ton of printing and have tried many different brands and type of filaments. PLA is one of those filaments where even the worst filaments you can still usually make work for rough prints, prototypes, or stuff where looks aren't important, but PETG. not so much. I have tried lots of different PETG's and the bad stuff is essentially unusable, with most of the brands I have tried tending toward the mid-range, which means you can use them but you have to get everything perfect and then watch the prints like a hawk.The Yoyi PETG filaments I have used however have been AMAZING (both the green and the clear). I did essentially zero tweaking on the settings, set it to a good rough guess for PETG, and both printed perfectly. The prints are super strong, I have had zero issues with bed adhesion, and the colors and results look beautiful.Honestly, this stuff prints better than any of the other PETG I have used -- including supposedly better brands that cost half again as much (or more).The only downside on this stuff is stringiness. if you have lots of details on the inside of a part, expect a lot of strings. Reducing the print temp a bit and running the part cooling fan on 50% or less does help, but also reduces layer adhesion somewhat. This is pretty much normal for PETG though (i.e. it still isn't PLA), but PETG is so much better if your part needs a little higher temperature performance and a needs to be less brittle than PLA.