Here is a metal face mask my Apprentice Chris Freedman and I designed and built for a client named Malik Odoms in Bossier Louisiana to wear during his musical performances. It was made primarily with 24oz copper w/stainless steel bolts in the forehead and teeth crowns.
We only charge him $400 for this, even though it took more than a couple hundred hours to design and build this, after exchanging 37 e-mails and taking over an hundred digital images of the cardboard and aluminum mock-ups Chris made. It was an interesting project. Quite a departure from replacing gutters or building copper chimney caps. It has a separate jaw that is designed to move up and down with his jaw. The teeth at not in the middle to allow for his mic to be close to his lips.
We used some clear rubber strands for the jaw action and to secure it on his head. It is padded for comfort. You can also see the video we made that shows the jaw action: [link]
To see more images go to: [link]