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Subject: RE: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?

From: "Tony Smith" <ajsmith1968@...>
Date: 2011-11-29

> > Available at Hardware, Building Supply, and Pool Supply stores
> > Hydrochloric Acid / Muriatic Acid 31%
>
> In our local hardware store, it's in the paint aisle, as it's used to
clean concrete
> before painting.


Same in Australia.

Tony