Currently, the demand is increasing for machine micro and nano size dies of complex profile with minimum post-processing operations. These dies are used primarily in dental, jewellery and optical fields. These should have explicit characters as follows: (i) a high surface finish to attain good quality with fewer defects, (ii) the corrosion formation inside the dies should be minimized to provide a good life for the components, and (iii) the strength should be good for avoiding the deformation of dies and reducing material wastage to maximize the utilization of the work material. Taking these points as the objectives, the present work has been carried out. In the conventional machining process, the tool contacts the workpiece and the defects are more. To overcome these drawbacks, an unconventional machining process, where the tool does not contact the workpiece, was investigated. But all unconventional machining processes are not suitable for manufacturing dies with intricate shapes; the Wire Electrical Discharge Machine (WEDM) is more suitable. The wire electrical discharge machining is a process of generating sparks between the wire electrode and the work material. The machining of the material takes place with sparks and the machined material scraps were removed with the help of a dielectric fluid. The performance of the WEDM is very low, therefore many researchers tried to improve the performance of WEDM. A Few researchers optimized the machining parameters for improving the performance. A Few investigated by changing the wire electrodes. The wire electrodes are of molybdenum, aluminum, copper and brass. The molybdenum wire electrode has good strength for high tension, but it has poor electrical conductivity; with this the spark generation is less and spark intensity is less; hence, the performance of WEDM is poor. The aluminum wire electrode?s strength and electrical conductivity are a little better than molybdenum and the spark generation and spark intensity is average, but it has insufficient strength for high tension. Copper has good electrical conductivity, which helps in more spark generation, which in turn leads to high spark intensity. With this, the performance of WEDM increased, but it has minimum strength, cannot withstand high tension and the cost is more. So the brass wire electrode is introduced; it is a combination of zinc and copper alloy. The brass wire electrode has good electrical conductivity with more spark generation and high spark intensity, high strength and high tension, and hence the performance of WEDM is comparably high.