Charlene,
Material is a large factor in the depth of scoring, as well as to the
quality and ease of removal.
I've seen from a .018" to a .031" remainder. The 031" would break, but not
cleanly. Made for
a stronger panel, but the .018 was easier and the product looked much
better.

The assembly also becomes a factor since some have the entire panel
assembled, requiring a
thicker V and some have the board scored so they may be removed then
assembled.
The depth and angle aren't as important as what is left. This may be a value
that you use
regardless of the thickness.

As for combination, consider only the hardness for the thickness remaining.

Consider making a matrix of you findings

Type                  Fr-4        Fr-4 Panel assembled       etc......

Thickness         .020"                .031"

Sorry I can't be more specific, since it is application driven.

Chris Robertson
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  What depth, and angle do you spec on your panel drawings for scoring a
board with a .062 thickness?

  Does it make a difference on the Board Material because we are using a
combination of FR4 and RF35 for a 4 layer board.

  -Char





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