We typically stay .030 from any routed or V-Grooved edge for just this
reason exposed copper.

Steve Collins

----------
> From: [log in to unmask]
> To: [log in to unmask]
> Subject: [TN] Scoring
> Date: Thursday, July 30, 1998 10:42 AM
>
>      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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