PETG is a very resistant material with good thermal resistance. Its use is universal but especially suitable for mechanical parts and for indoor and outdoor use. The PETG adheres very well to the heatbed, making it perfect for printing large objects.
It is almost as easy to print as PLA, but it also offers mechanical properties as it is more elastic and not as rigid, which makes it better able to withstand shocks.
The G in the acronym PETG stands for Glycol which is added during the manufacturing process. Glycol modifies the properties of PET to make it easier to print, less brittle and clearer when printed with semi-transparent variants. PETG has a low thermal expansion, so even when printing large objects without the need for an enclosure, it rarely lifts off the bed or warps.
Unlike PLA or ABS, PETG tends to bleed a bit and can leave plastic threads during printing. You can fix this by increasing the retract values and adjusting the hotend temperature. If there are still threads left, you can always use a heat gun or hair dryer to remove them.
PETG is suitable and safe for use with food or liquids. We do not recommend using prints more than 2 times as bacteria could lodge in the small fractures of layered printed parts. But you can always surprise your friends or family with some original objects.
Make sure the surface is clean before printing.