can i make new film, but used x-ray picture material? or your variant is better?You can use rubber or nylon washers (from your local hardware store) between the mobo and the backplate at the 4 screw locations. #6 washers typically.
Stick electrical tape to the backplate. Doesn't matter much. Just needs to prevent the backplate metal from touching components on the back of the mobocan i make new film, but used x-ray picture material? or your variant is better?