Every man has ever had to pull a screw or a nut that sadly rustled. There are many ways to do this either by welding a new nut or by using a drill.
But a much easier method is shown in this video.
The principle is simple. The rusty bolt is heated and through expansion it moves after which it can be removed.
You can also use a gas torch for those who do not have this tool.
Very useful for any man not just for mechanics.