It is observed from the resulted values that the minimum and maximum surface roughness values are 0.78 μm and 3.58 μm, respectively. The minimum power consumption of 15 watt and maximum power consumption of 495 watt was observed. Increase in speed reduces the surface roughness value, while increase in feed and depth of cut reduce the surface roughness values. Power consumption is observed to be increased when speed, feed rate and depth of cut is increased. Hence, cutting speed is observed as a critical cutting parameter, which improves surface finish, when it is increased in value. More investigation on EN 31 alloy steel is possible with further design of experimentation.