Homebrew PCBs

Lez wrote:
> I just love reading these etchent points being argued back and forth
> when all i can buy is fecl, and even then its expensive, as in the UK
> all we have left where I am is 'maplins' - a uk company that was the
> best of the 1980's electronic components suppliers, now it thinks its
> a cross between the disney store full of toys and radio-shack as we
> knew it as tandy.
> 
> http://www.maplin.co.uk
> 
> update: OMG they dont do fecl! its sodium persulphate now, must buy
> some and try it.

They stand to profit from that better because you're forced to dispose
of it due to decomposition. Real "envirofriendly" with all that copper
in it. With my FeCl, it is holding all the copper i've etched in the
same tank for 2 years. It would be good to make the sodium persulphate
stuff convert to a long lasting CuCl etchant. I haven't tried that.