Homebrew PCBs

Run a roll of black and white film through some fixer solution (hypo).
 It will disolve the silver-based film emulsion.  If you know a
photographer who uses black and white film ask for a bottle of
exhausted fixer solution. You might even get some from a commerical,
custom film processor.  
> 
> I've mailed my chemicals shop 'bout the prices for silver chloride and  
> silver nitrate and they put quite the dampener on the idea anyway.
While  
> it is probably very sparingly used it is still not cheap. Also, the
layer  
> is probably very, very thin. I guess it would be more economical if
one  
> would use "junk" silver and convert it into silver chloride with  
> electrodes or to silver nitrate with acid. I guess plumbing solder is  
> really the most economical way.
> 
> ST
>