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