Homebrew_PCBs

> Its not good idea to have cathode CD (current density) at level where
> hydrogen is almost being produced. I would operator at about half the CD
> of
> the CD needed to produced hydrogen. The ratio of grams of recovered
> copper
> per unit charge depends on the CD and solution agitation near cathode
> surface. You trying to maximize this ratio.
>
> Here is a copy of a document I wrote when doing experiments with alkaline
> ammonia sulfate electrolytic regeneration.
>
> http://members.optusnet.com.au/~eseychell/etching_eff.html
>
>

I thought i must decrease the cathode area to absolute minimum because
otherwise
the etch rate might overcome the plating rate.

I will read the page...

thanks

ST