Effect of Tool Shapes on MRR and TWR in Die Sink EDM

Aim of this work is to study the effects of tool shapes with its size in Die Sink Electric Discharge Machining (EDM) Process. To explain effects of machining factors like, discharge current, pulse on-time, pulse off-time, and tool area with various tool size and shapes like Rectangular, Circular, Square, U-Shape, and Triangular on Material Removal Rate (MRR) and Tool Wear Rate (TWR) in EDM. This paper presented in three sections, first details about the EDM process and its important aspects, second section contains overview of various studies carried out with considering tool shapes as a factor in Die Sink EDM process, and last section gives comparative study of the various tool shapes used in EDM which is useful to others to select best tool shape while doing further research in same field.