Clamping of the part was not adequate.|Parts was clamped in the machine with the help of vice and proper torque wrench was also used during clamping process but the part lifted during the machining process.|The vice was subjected to expansion and contraction during the machining process which resulted in the inadequate tightness and lifted the part during machining. |The vice used for the clamping of parts was not hardened before use.|The requirement of hardening the vice was not considered during the trial of new process.