In {TAIL ~ the second position}, the abrasive surface is in contact with the exterior surface of {HEAD ~ the elongated work piece} 
In { TAIL ~ the second position } , the abrasive surface is in contact with the exterior surface of { HEAD ~ the elongated work piece }
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD