When working on objects that can fly apart during disassembly or assembly, I have a 12" X 18" X 8" tall box with a clear plexiglass top and holes cut into the sides with rubber gloves fastened to the outside. I place the object in the box, slip on the gloves and go to work. If a part should fly out, it stays in the box where I can find it. Don't ask why I built this. Have used it on several occasions and it has saved me a lot of grief when things went ker-fluee. Taking a picture before hand is a great idea too!