ORBITAL CUTTING MACHINE : Harsh B. Kansara, Shantanu S. Walavalkar, Nabil A. Solanki, Abhishek Waruskar: Mrs. Nehal Muchala : Thakur Polytechnic : Orbital Cutting machine (O.C.M.) WORKING PRINCIPLE: the main principle of the O.C.M. is to cut the weld around the periphery of the pipe welded on a flange.