For 1st part x&z offset for turning and boring tool is taken and run the part. after operation part is removed from the jaws because to check the total length and the same loaded for completing boring operation but the program is run from starting i.e.from facing and the boring.In 2nd operation 1mm stock is maintained for next operation(212mm).in third operation part is butted to stopper in stopper program 1mm stock is given for facing purpose,that 1mm stock is cleared in facing operation when same part is running two times total length is undersized. 