Electro-spark process for microfabrication

Abstract Microcomponents have become a primary choice for modern industries, especially automobiles, aeronautics, robotics, computers, and medical due to their miniature in size, low mass, and ability to fit into limited space with multifunctional characteristics. The unique features of miniatures are vigorous for present scenarios, but its shaping is still challenging. Therefore, the shaping becomes more exigent for fabrication of microcomponents made of difficult-to-machine materials. In such conditions, the electro-spark energy–based shaping method, referred to as electro-discharge micromachining (EDMM), shows their potential for fabrication of various microcomponents like electrodes, tools, dies, molds, nozzles, gears, shafts, compressors, pumps, holes, channels, 3D profiles, and microdevices for biomedical applications. This chapter focuses on the basic features of EDMM including shaping mechanism, variants, process parameters, and capabilities. The present chapter arranges in such a way that it becomes interesting for readers and provides an easier platform to understand the crucial insight of electro-spark for microfabrication.