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