Electrochemical micromachining is a non-traditional machining process used for drilling at the micro level. The process is challenging to control due to its reliance on reaction parameters like over-cut, material removal rate, and taper. The removal rate of material (MRR) and overcut are key responses observed during the process. Recent studies have focused on investigating the effect of process parameters such as Electrolyte concentration, voltage, and duty cycle on electrochemical micromachining. Researchers have found that variations in the Electrolyte type, combination, and duty cycle can significantly impact material removal rate and overcut. In this work, the combination of novel electrolyte and the optimal temperature was maintained to carry out the experiments. The removal rate of material and overcut are critical responses observed during the process in which electrolyte concentration has shown to impact these responses significantly. SEM (Scanning Electron Microscope) images have been used to analyze the resulting drill surfaces, providing valuable insights into the microstructure and morphology of the drilled holes

Keywords: EMM, L9 orthogonal array, RSM, SEM, SS316L