I haven't disassembled an SE/30 but the Classic and Classic II can have all plastics removed without going to the lengths described with suction cups and the like. The back comes off, obviously, and the front bezel is just screwed to the metal frame, and comes away with removal of several screws. You do need a long screwdriver, mind you.
Is an SE/30 so different?
Is an SE/30 so different?