The author focused on EDM fundamentals. These are the items common to all EDM machines, such as the spark, how the spark is controlled, what causes overcut, and the importance of the dielectric fluid. With regard to the workpiece, covered are the affect the spark has on the metallurgy and how the surface finish is produced and controlled. The book also describes the development of Electrical Discharge Machining (EDM), the EDM system and process, the EDM sparking system, the power supply (generator), spark voltage, electrode servo systems, dielectric systems, ionization and electrode wear, chips, the EDM surface, DC arcing, different kinds of EDM, automatic servo systems operation, and electromagnetic radiation.
