Electrical discharge machining or 'EDM' shapes metal by creating sparks that melt tiny portions of the workpiece. EDM is an exceptionally diverse process that generates no cutting forces. This allows the production of fragile parts that cannot take the stress of conventional machining. As an introduction, this video program examines, in detail, the components of an EDM system, and the EDM erosion process. The two forms of electrical discharge machining, ram, and wire are then featured, with a comprehensive exploration of their individual subsystems.