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