Surface roughness is one of the important parameter in conventional machining. Optimising these parameters is most challenging task in turning process. In this experiment we consider the parameters of alloy of steel to attain best surface finish. Here we undertake speed, feed and depth of cut as machining parameter. Taguchi method is further implemented to find the various levels of chosen parameter and thus using statistical analysis we find the optimum range of speed, feed and depth of cut to minimize the surface roughness and employed in working model for real time experiment. Here we use work material of EN8 steel and tungsten carbide tipped tool. © 2015 Elsevier B.V., All rights reserved.