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Re: [Homebrew_PCBs] Precipitate in ferric chloride storage bottle

2010-10-01 by Philip Pemberton

On 27/09/10 20:15, Hector Garcia wrote:
> Regenerate it
>
> http://www.qsl.net/iz7ath/web/02_brew/14_howto/02_clor/index.htm

Hmm, HCl+H2O2... isn't that the 'starter' for a CuCl etch bath? That is, 
you mix HCl and H2O2, start up the air bubbler, then chuck in a few 
chunks of copper and wait.

So after that, you'd pretty much end up with a 'hybrid' etch bath, 
consisting of FeCl3 and CuCl... interesting... Might explain why my etch 
bath is going somewhat green.

Would 9% H2O2 and 'brick cleaner' HCl be OK for this, or do I need 
something more concentrated?

Thanks,
-- 
Phil.
ygroups@...
http://www.philpem.me.uk/

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