Julie,

OK on the Vanillin/Palladium.  Just wondering how much acid copper you are
getting in the center of the holes?  If the MacDermid carbon black direct
metallization is not compatible with the acid copper, we get less in the
center.

However, you need to solve the drilling/laminate problem, because even if
copper does plate around the glass fibers, the boards seem to absorb water in
storage and blow hole at assembly.  Then, your customer will complain
whenever assembling parts - one to twelve months from now.

One final tip - cross section some holes 45 degress from the weave.  Cross
sections usually are with the weave - just the way we drill holes in a
straight line and cross section to get the most holes.  45 degress cross
sections will reaveal the most resin "chunking" and the most glass bundles
torn.   Good luck

Denny Fritz
MacDermid

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