PETG combines the strength of ECO-ABS, some flexibility of Nylon and the easy printability of PLA to make it a great all-around filament. It is also very durable and temperature resistant. It is good for printing mechanical parts and protective components. It is also good for printing large objects since it doesn’t warp much. Printing it at slow speeds (30% - 50% on the 3D45) leads to a shiny, almost transparent surface finish.