Homebrew PCBs

On Wed, 12 May 2004 22:37:23 +0100, lists 
<stuart.winsor.lists@...> wrote:

> In article <opr7wfrpnoooawdc@...>,
>    Stefan Trethan <stefan_trethan@...> wrote:
>> > I found something at an art store a few years ago called "Liver of
>> > Sulphur" which I used to blacken copper for antiquing purposes.
>
> Pottasium Sulphide
>
> Stuart.
>

thanks, don't have this one either..

guess i must buy something..

ST