Homebrew PCBs

A color separation company or an offset printing company doing their own 
film or flat will also have the same kind of used fixer solution.

----- Original Message ----- 
From: "bob_ledoux" <bobledoux@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, December 03, 2005 10:22 PM
Subject: [Homebrew_PCBs] Making Your Own Silver


> 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
>>
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