Machining is one of the major categories of manufacturing processes. The product is manufactured by removal of material in a controlled manner with the help of a selected cutting tool and a machine tool. The subject Machining Science broadly cover the fundamental principles behind the cutting process. The major topics covered in the course include tool geometry, mechanics of machining, thermal aspects in metal machining, Experimental measurement of tool temperature and cutting forces, Economics and optimization of machining, Ecological and harmful effects of cutting fluids use din machining processes.