The wells may vary in size and depth depending upon the penetration of the laser beam into {HEAD ~ the panel} of {TAIL ~ substrate material} 18 
of
The wells may vary in size and depth depending upon the penetration of the laser beam into { HEAD ~ the panel } of { TAIL ~ substrate material } 18
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH