Electric discharge machining (EDM) is the controlled attrition method of electrically conducting materials. This non-traditional machining technique employs the repeating and interrupted electric spark inside a dielectric medium among the cathode—tool and anode—work piece that removes material from the work-piece. This experimental work is focused on the electric discharge machining of AISI-D2 steel using copper electrode. Experiments are conducted according to the response surface methodology (RSM) of the design of experiment (DoE) to explore the effects of machining features on material removal rate (MRR) and surface morphology concerning surface bumpiness (Ra). The responses, namely MRR and Ra of this die-sinking EDM work are obtained by changeable current (Ip), voltage (Vg), and pulse-on-time (Ton) with the suitable values. Surface roughness values are quantified by of a surface tester and finally the machined surface morphology is examined with scanning electron microscope (SEM).