Homebrew PCBs

Na 1.10.2010 17:34, Philip Pemberton je pisal:
> 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.

You need mode HCL and H2O2 to regenerate that. Just use straight HCL and 
H2O2 to etch board.

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

For etching just use 9% H2O2 and HCL. One part HCL and aprox 3 part 
9%H2O2. No water needed. Use as smal as you can quantity just to cover 
board.

> Thanks,