Homebrew PCBs

Yes it is dark green\black, it go's darker with use, but when i put the
air pump on, it foams up (frothy) and starts to come out the top of the tank
is this ok ? am using the pump cos i think that it needs more air time!

On 29 March 2010 17:12, DJ Delorie <dj@...> wrote:

>
>
> If you have dark green, you have CuCl. Pour it into your other tank and
> turn on the bubbler, that's all. Note: dark GREEN is good, dark BROWN
> needs more air time.
>
> See http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/<http://members.optusnet.com.au/%7Eeseychell/PCB/etching_CuCl/>for the
> rest of the chemistry :-)
>  
>



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73's Howard G7LQY
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