This text explains the unique machining capabilities of EDM in depth, to provide the reader with a full and clear understanding of both the practical and theoretical aspects of the technology. Balanced coverage is given to both wire and vertical EDM, and the book contains many tips and ideas to improve performance that can't be found in any other source. Unusual topics include discharge dressing, innovative flushing techniques and advances in CNC-EDM strategies that will save both time and money. It also contains information on troubleshooting; purchasing and installing a machine; moldmaking techniques; preventive maintenance; and selecting and filtering water and dielectrics.