About PETG PETG is a very tough material with good thermal resistance. Its use is universal but especially suitable for mechanical parts and both indoor and outdoor use. PETG has almost no warping, so printing large objects isnt a problem. PETG is one of our favorite materials for 3D printing. Its almost as easy to print as PLA, but it can offer many mechanical properties that PLA prints just cannot achieve. The G in the acronym PETG stands for Glycol which is added during the manufacturing process. Glycol modifies the properties of PET, so that its easier to print, less brittle and clearer when printing with semi-transparent variants. PETG has low thermal expansion, so even when printing big objects, and without an enclosure, it rarely lifts from the bed and warps. In addition to that, PETG is ductile. It has a healthy amount of flex which can prevent parts from breaking under pressure. Unlike PLA or ABS, PETG tends to ooze a bit and may leave strings of plastic on your print. If you witness a tiny bit of stringing anyway, you can get rid of it by quickly blasting your finished prints with a heat gun. If you can handle the oozing and strong adhesion, youll be left with a very durable print, that is considerably temperature resistant and usable for both indoor and outdoor use. High temperature resistance Easy to print Low shrinking and warping Strength and Durability Simple to sand Not suitable for tiny parts Possibility of stringing Poor bridging characteristics