Electrical discharge machining (EDM) is a process where the material removal of the
workpiece is achieved through high frequency sparks between the tool (electrode) and the
workpiece immersed into the dielectric solution. It is commonly used to produce moulds
and dies, to drill small, burr free holes and to make prototypes for the aerospace and
electronics markets. In this work, micro-holeswere fabricated on copper alloys by using
EDM. The output responses investigated was electrode wear weight (EWW). Full
factorial of Design of Experiment (DOE) module in Minitab was used as a principal
methodology to examine the effects of current and machining time over output responses.
Experimental results indicate that the EWW was mainly affected by current, and can be
reduced by increasing the current parameter. Minimum EWW (0.12gm) obtained at 10A.