This document reviews the effects of cutting parameters like cutting speed, feed rate, nose radius, and depth of cut on surface roughness during turning operations. It discusses previous research that has investigated these effects on various materials like steel, aluminum alloys, and cast iron. The key findings of previous studies are that feed rate often has the greatest influence on surface roughness, while depth of cut and cutting speed also significantly affect results. Response surface methodology and Taguchi experimental design approaches have been used to optimize cutting parameters and predict surface roughness. Overall, controlling cutting parameters is important for achieving the desired surface quality during turning.