I made a CRT adapter mask to mate the proto CRT to a CT-100 cabinet, for the purpose of ETF demonstration. It's a board with trimmed 16" B&W mask secured to it, the board has mounting slots cut into it that are correct for the CT-100 cabinet so no modifications are needed. No hole drilling on the cabinet, just R&R the 15G with the proto stuff. I have also decided that having the bare CRT face in the cabinet could be a liability, so for safety's sake I will have a piece of plexiglass cut to the size of the opening in the cabinet to protect wayward fingers from getting zapped. This is what it looks like.
