ve,
     If the contract with your supplier included their meeting the
acceptability requirements of IPC-600E then you may have a chance of some 
negotiation on the boards already built that exceed the 50% limit.  In my 
opinion though, the 50% limit was written for punched holes not straight = 
line
board edges.  The amount of haloing with vary from board to board dependi= 
ng
on how the cut intersects with the glass bundles in the laminate weave.  = 
If
you twist your supplier=92s arm on the ones already built, you will find = 
the
next order will have a price increase or they may refuse to build them.=20
      FR4 in my experience does not perform well when die cut.  Paper bas=
ed
laminates can be die cut with less edge damage.  With traces only .015=94=
 from
the die cut edge, your design will be an on going problem particularly as=
 the
die begins to wear.
           Norm Dill
  
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