|  | The inner faces
        of the four tabs will require finish machining in all cases. 
          The inner faces of the tabs will require precision machining
            to meet the fit and tolerance requirements.
A machining step is necessary, because casting in sand molds
            does not provide the degree of final precision required. Go Back and Choose another
        Machining Feature (Circumference or Outer Tab Faces) Or
 Go on to the Next Design Issue
 |