A typical laser hole has {TAIL ~ a burr} and dross at {HEAD ~ the edge} of the hole opposite the laser  
A typical laser hole has { TAIL ~ a burr } and dross at { HEAD ~ the edge } of the hole opposite the laser
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH