I am looking for input as to what others use as a rule for cutting
     back copper on artworks, to avoid being cut during the v-score
     operation. It seems that whatever I use, no matter how many times I
     double-check my numbers, we still occasionally get copper being
     exposed during scoring. If there is a better way than I a using, it
     would be appreciated. I am currently using a formula of the depth of
     the score ( not the web ) multiplied by the tangent of the given
     angle. Ex : a depth of .021 X 30 degree tangent (,5774) tells me to
     make sure that we are clear at least .012 from the edge of the board.
     If I'm calculating wrong, please let me know.

                                 Thanks

                                 Ernie Smith    [log in to unmask]

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