During Covid-19 times a lot of people tried to create protecting face masks or face shields. Though PLA is intoxic, several tests showed critical behavior when being used for protection wear. Main issue are the sharp edges when breaking the brittle material.

PETG was said to be less brittle and just as printable as PLA. So I gave it a shot.

For first steps I tried to proof the printability of PETG by printing simple whistles, which worked out very well.