Protective mask with pressure stops

Original design by AGOS C, y added two pressure stops so the foil gets fit without any chance of moving. No need to add any screw or anything else except foil and rubber band. In our tests, the foil tends to slide accidentally sometimes when the mask was removed, so I added these points of pressure. Printed it with 0.6mm nozzle, so you can print with the standard 0.4mm.