Hmmmmm..I can't explain that one. I live in Virginia near Washington, DC. The
temperature here is 101F today and the humidity is anywhere from 48 to 90 %.
The boards on the web page were drug out of my basement garage from a box that
had mildew growing on the side. I don't think the etching process could make a
difference but I'll think about it.
Rick

Brendan Moran wrote:

> > Granted, if I were to have a pc house fab the boards in quantity for
> commercial
> > use, I would have them SnPb electroplated and infrared reflowed. Still,
> most
> > hobbyists and experimenters aren't going to want to spend that much money
> on a
> > single or handful of boards. The link below shows some of the boards I
> have made
> > and the effects of no tin plating:
>
> I understand that you've had good results, but please be aware that a board
> I made 2 days ago is now more tarnished than some of your 25-year-old
> boards.  I suspect it has much to do with climate and the particular alloy
> used as "copper" cladding.  the other possible variable is the etching
> process used.  I used a positive art photo etching process on my now
> tarnished boards.
>
> > http://www.pic101.com/pcb
> > Every time I wash my car, it rains. :-(
> > Rick
>
> It almost always rains here, in Vancouver.  No matter what anyone does, it
> rains when they wash their cars.
>
> --Brendan
>
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