In {HEAD ~ operation}, the laser beam 30 from the laser 12 is directed by the mirror 14 to a focusing lens 16, which concentrates or focuses the laser beam 30 into {TAIL ~ the sintering nozzle} 28 
In { HEAD ~ operation } , the laser beam 30 from the laser 12 is directed by the mirror 14 to a focusing lens 16 , which concentrates or focuses the laser beam 30 into { TAIL ~ the sintering nozzle } 28
OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH