Aluminium alloys have good to machinability and good strength to weight ratio. This exercise aims at optimizing input settings of CNC machine turning of AL 6061. This research involved turning with a six-edge carbide insert. The prime objective of this investigation is to study the effect of various input parameters like speed, depth cut and feed, on response variables such as surface roughness and MRR during dry and MQL mode turning. This experiment is conducted as per Taguchi orthogonal array L9, for application CNC turning for dry and MQL mode. It is observed that for dry run, minimum surface roughness is 0.48 µm with maximum contribution of depth of cut, and in MQL mode, it is 0.44µm with maximum contribution of feed rate. Also for MRR in dry mode, it is 39654.75 mm3/min with maximum contribution of feed rate, and in MQL mode, it is 45663.05 mm3/min with maximum contribution of feed rate.