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Subject: Re: [Homebrew_PCBs] Etchant recycling

From: Adam Seychell <adam_seychell@...>
Date: 2003-12-31

dkesterline wrote:

> Hello,
>
> I've been experimenting with toner transfer for a while now, and I'm
> starting to see acceptable results. This group has been a great help
> in my endevors.
>
> I read some posts in the archives about recycling (revitalizing might
> be a better word) Feric Chloride etchant.
>
> As I read the instructions, using two iron nails as electrodes, run
> about 1 amp through the solution. (more details would have been
> helpfull)
>

Another possibility is to use carbon anode, and it may reduce
your ferrous ions to ferric ions , but don't put too much voltage
that chloride gets reduced and chlorine gas. If you smell
chlorine at any time, then reduce the voltage.

Adam