Homebrew PCBs

I use ammonium persulphate and give the CuSO4 crystals to my local council
"hobby chemical cleanup" which they do a few times a year.

For low volume guys like me, persulphate rocks. No stains, no corroded
plumbing or dead dolphins ...

PG

On Tue, Nov 29, 2011 at 6:13 AM, DJ Delorie <dj@...> wrote:

> **
>
>
>
> DaveC <davec2468@...> writes:
> > OK, everybody, chime in here and share how you dispose of your etchant.
>
> I don't. Use CuCl and regenerate it.
>
> Any tiny bits of etchant I rinse off the board are so diluted by the
> torrent of water that it doesn't really matter what happens to them.
> They go into the perimeter drain, and eventually end up out in the
> woods, where I assume (hope) they're doing their part to keep the weeds
> away from the end of the drain pipe, if they do anything at all.
>  
>


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