{HEAD ~ The rod} moves {TAIL ~ the primary extrudate} 41 until the extrudate 41 either contacts and thereafter bonds, or comes in close proximity, with the secondary extrudate whereafter the rod returns to its original position 
moves
{ HEAD ~ The rod } moves { TAIL ~ the primary extrudate } 41 until the extrudate 41 either contacts and thereafter bonds , or comes in close proximity , with the secondary extrudate whereafter the rod returns to its original position
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH