Safety pins are made of small metal piece. The metal which is used for making it is a combination of different metals like iron, copper, platinum, copper, gold and silver. While making Safety pins the metal are heated and then formed into different small pieces of combined metals. The experiment of making Safety pin was started one afternoon by Walter Hunt. The safety pin was not a deliberate invention by him. It happened while sitting in deep thoughts with a twisting wire for three hours. The unconscious attempt was named by Walter Hunt as safety pins. Still he did not invent it, he only improved it. |