Book excerpt: This book bridges the gaps where limited resources are available on comprehensive coverage of spark erosion machining (SEM) based processes. It provides researchers and scholars a vast amount of information on recent research on the subject. It also serves as a resource of novel and specialized applications of spark erosion machining and its variants, for students and faculties involved with advanced machining processes. Some salient features of the book: Describes various important aspects of spark-erosion based processes including their derived and hybrid processes. Includes a broad scope of SEM applications from industrial, commercial, and scientific to aerospace, automobiles and biomedical domains. Covers a wide range of materials applications of SE-based processes to different exotic and difficult-to-machine materials, i.e. superalloys, composites, ceramics, shape memory alloys, etc. Provides details micro version of EDM and WEDM processes and their specialized applications.