DURING 90 DEGREE A AXIS ROTATION DUE TO THE VIBRATION THE WALL THICKNESS GOT UNDERSIZED.|DURING THE FIRST PART PROVING OUT THE CHATTERING MARKS WERE OBSERVED ON THE PART DUE TO THE VIBRATION WHILE AVOIDING THE MISMATCH AND CHATTERING THE PART THICKNESS GOT UNDERSIZED.|SINCE  THE CUTTING PARAMETERS WERE NOT PROPERLY ADJUSTED DURING THE FIRST PART PROVING OUT.