Die-sinking EDM machines are precision tools used for cutting hard materials such as metal, ceramics and plastics. They are also called die-sinking EDM machines or spark erosion machines. These machines work by generating spark discharges between an electrode and the workpiece, which removes material from the surface of the workpiece. The machine consists of an electrode, which is made of a conductive material such as copper, and a workpiece, which is made of a hard material such as steel or aluminum. The electrode is lowered onto the workpiece and the distance between the two is controlled electrically. When the electrode and the workpiece come into contact, an electrical pulse is generated that produces a spark discharge. This spark discharge melts the material on the surface of the workpiece, removing material from the workpiece surface. Die-sinking EDM machines are used in many industries, especially in the production of tools, molds and dies. They can create complex shapes and contours that are difficult to produce using conventional manufacturing technologies. Die-sinking EDM machines are also useful for repairing tools and dies, as they can remove material from the damaged surface without damaging the tool or die.