Does this mean that I need to make sure that my final hole 
          location including slop should never be closer that .010"?  
          This would mean that I should make my mininum distance:
          
                .010" + Slop 
          
          If for example my hole to board edge tolerance is .005" then 
          this would mean that I would need .010" + .005" = .015" 
          nominal edge of hole to nominal board edge.
          
          Appreciate your feedback.
          
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          It is good design practice to allow a minimum of .010" from 
          any plated feature (pad or trace) to the board edge. Bringing 
          copper right to the board edge makes for possible rough edges 
          where the metal has been cut into by the fabricator's router 
          bit.  Since the overall dimension of the pcb has a tolerance, 
          the .010" is recommended.
          I, too, have seen designs where a plated hole has been "cut 
          in half" at the board edge.  I have also seen the plating 
          yanked out of the hole wall when the router bit cuts through 
          these holes.
          Even non-plated holes that come closer than .010" from the 
          board edge can fracture the material when the router bit 
          comes close to these holes.
          Tom Coyle
          Field Services Engineer
          HADCO Corporation
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