At 03:05 PM 2/1/2009, you wrote:
>get the patternized PCB blank into the enchant as quickly as
>possible, also reducing any chance of
>oxidization and Copper contamination.
don't really think you have to worry about this one as far as
etching is concerned, as long as they are kept from getting filthy. i
used to produce multi-copy pc boards by screen printing resist onto
the boards. i've etched boards that were stored over a year after
i've printed them, with various discoloration on the exposed copper
and when etched in ferric chloride, worked just fine.
>Further, I don't touch any exposed Copper area with my fingers after
>I've cleaned the surface
this one is vitally important.
William Alford
GI Motility Medical Research Page
http://alford.grimtrojan.com/ [Non-text portions of this message have been removed]