I'm thinking about changing existing garage (which is never used as a garage) into a workshop. The existing steel door is bent and the wire on the one side is broken so I intend to replace it with a stud wall and a 3ft wide door. With the garage door open and propped, and if I cut through the remaining wire will the spring unwind within it's steel box without doing damage or is it too dangerous to DIY it in this manner.
Don