making a first perforated laser cut having a perforation spacing, in said panel of {HEAD ~ substrate material} to define {TAIL ~ a substantial portion} of a perimeter of said irregular shaped substrates; and 
to define
making a first perforated laser cut having a perforation spacing , in said panel of { HEAD ~ substrate material } to define { TAIL ~ a substantial portion } of a perimeter of said irregular shaped substrates ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH