Electrical discharge machining

Electrical discharge machining (EDM) is like when you use a special tool to make designs in metal or other materials.

Imagine you have a piece of metal that you want to make into a specific shape, but you can't just cut it with a normal saw or drill because it's too hard. EDM can help!

With EDM, you use an electric current to "burn" the metal in a very controlled way. Think of it like using a tiny lightning bolt to make a shape on the metal.

First, you make a tool called an electrode that matches the shape you want. Then you put the metal piece you're working on and the electrode in a special machine that can control the electricity.

The machine creates a spark between the electrode and the metal, and the spark burns away tiny pieces of the metal in a very precise pattern. This keeps happening over and over, slowly but surely creating the shape you want.

EDM is a really useful tool for making very precise shapes and designs, especially when the material is too hard or too delicate for other methods. It's like using a magic lightning bolt to make something beautiful!