Homebrew PCBs

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/ 

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