Could be a collector of historical pennies?
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@...> wrote:
>
> On Fri, 24 Feb 2006 17:07:36 +0100, alan00463 <alan00463@...>
wrote:
>
> > No need to buy a fancy cleaner. I used to clean pennies in a
> >
> > mixture of vinegar and salt. The proportions make little
> >
> > difference. The solution strips off all the copper oxide almost
> >
> > instantly. Any kind of vinegar. Of course, you'll have to
rinse
> >
> > the board in water right after doing this.
> >
> > Alan
>
>
> Ok, what i don't get here, why are you cleaning pennies? I mean,
it
> doesn't really matter if they are dirty when you spend them, right?
> What am i missing here?
>
> ST
>