[sdiy] DIY PCBs

[Ken Stone]

>
>Isn't the Copper the real problem ? FeCl isn't toxic,
>but the Copper is ...

When you have finished using Ferric Chloride (ie it will no longer etch) you
can re-extract the copper by throwing some iron (old nails etc) into the
spent solution. The result is ferrous chloride, and a "mud" at the bottom
that contains a lot of copper "crystals".

_______________________________________________________________________
Ken Stone   sasami at blaze.net.au  
Modular Synth <http://www.blaze.net.au/~sasami/synth/>
Catgirl Paradise <http://www.anime.net/~kens/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>