Been down this path many times. It has twist and turns not conducive to high
speed driving. In the early days of enig, lots of black pad at every turn.

Not trying to seem harsh, but I don't used suppliers who cannot prove they
have this problem licked. If you look at Proto Engineering's web site you'll
see they have a plant tour. About two thirds of the way through it, you'll
see how they ensure black pad defects are eliminated.

I use about 6 shops around the country. I have qualified them all to ensure
all processes are effectively managed. I have only had one occurence of
black pad with one of them in the early days of enig.

The enig process is capable of being very well managed and over the past
three years most everyone has caught on how to do it.

So my answer to your question lies above.

MoonMan

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