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