In OD roughing setup  running time insert will be chipped
out and part will came in plus side and that part not  
checking the operator and for next part he found out part 
will become over sized and he change the insert and
maintain the outer dia in required size. but previous part 
not maintain in proper diameter. So in the finishing setup that part loading time finishing tool get the more stock and chips will be rubbed in the outer diameter and part will be -.006 micron under sized. So part will become 
rejected.
