JW wrote:
We have a problem with one of our circuit board vendors who applied solder
mask to the gold fingers on a lot of 100 boards. Naturally, the 100 boards
were built up and the problem wasn't discovered until test. Does anyone
know of a way to remove it without losing the gold on the fingers?
Solvent or ??

There might be some acid which will eat the tincoat without eating the
gold. If so it's probably nasty stuff.

--
"This, then, is the essence of Gore's complaint:
there are too many humans and they are too well off."
-- Robert Tracinski