In operation, a user moves the belt sander along the guide rails while {HEAD ~ the abrasive surface} contacts the exterior surface of the work piece to smooth the exterior surface of {TAIL ~ the work piece} 
In operation , a user moves the belt sander along the guide rails while { HEAD ~ the abrasive surface } contacts the exterior surface of the work piece to smooth the exterior surface of { TAIL ~ the work piece }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL