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

From: DJ Delorie <dj@...>
Date: 2011-11-28

"leeleduc" <leeleduc@...> writes:
> 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.