Spot welding is a type of electric resistance welding used to weld various sheet metal products, through a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current.
DIY,It means do it yourself.But it doesn't mean all the parts made by our hand.We need to use other powerful tools to help us,and make the compoents perfect.
Soldering iron has lot of usages,and it used in many different feild.To soldering something?Sometimes,something only unexpected,and nothing impossible.