06-07-2004, 05:52 AM
chances are if they are pop rivets, and they were put on the mask with the pop rivet tool (instead of tapping them by hand) the pressure of the pop rivet gun will put so much pressure on the mask material that the metal from the rivet will cut into the mask itself. If this is the case, no matter how hard you try to take the rivet off without damaging the mask you will still end up with a big hole in the mask.