Discolored oven door glass
Wabbit - thanks for the suggestion, I thought about using an acid solution that would eat the metal but not etch the glass as you suggested. The actual opening or sighting area into the oven is a lot smaller than the door, maybe 4 by 8 inches and that is a two sided glass chamber that the outside glass is suspended from by an inner steel liner which also retains the fiberglass insulation for the rest of the door. So I don't think those little silver lines serve any purpose beyond decoration. The oven cleaner over night did not do a thing except make the glass very clean after a fresh water rinse. I have reassembled the door and the black baked enamel of the inner door looks ok through the "very clean, streaky glass front door". It works but it ain't pretty.