What is PETG filament
PETG is short for polyethylene terephthalate glycol-modified, and is a transparent type of Copolyester. PETG is the perfect filament to combine strength and ductility, which is why it's used in so many mechanical parts and robotics. It has great chemical resistance with good water, acidic and alkalic resistance
PLA vs PETG
PLA is slightly easier to 3D Print than PETG. This is due to PLA being more forgiving when it comes to settings. ... Both are user friendly, however PETG is more durable, stronger and is impact resistant. PLA and PETG have very similar densities. PETG will need a heated bed, whereas PLA can be printed cold. Layer adhesion with PETG is typically unmatched, leaving very strong and durable prints. PLA prints supports easily to remove, whereas these are harder (but not impossible) to remove with PETG
What is it used for?
It's used to make water bottles, food packaging, and countless other common plastic items. As a 3D printing filament, PETG plastic has proven its worth as a durable material that is easy to use.
It is widely used for packaging (both retail and medical), advertising displays and electronic insulators. It is also widely used in 3D printing since the glycol prevents the problems associated with PET, such as overheating and becoming cloudy and fragile. It is also possible to sterilise PETG items