In {HEAD ~ the first position}, the abrasive surface of the belt sander remains away from the work piece, and thus, does not contact {TAIL ~ the exterior surface} of the elongated work piece 
In { HEAD ~ the first position } , the abrasive surface of the belt sander remains away from the work piece , and thus , does not contact { TAIL ~ the exterior surface } of the elongated work piece
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH