Homebrew PCBs

I've gotten some questions in the past on where to find chemicals for making etchant. Here's a list of where to find Hydrochloric Acid and Hydrogen Peroxide in US stores.

Available at Hardware, Building Supply, and Pool Supply stores
Hydrochloric Acid / Muriatic Acid 31%

Available at Grocery stores, Pharmacies
3% Hydrogen Peroxide

Available at Beauty Supply stores
Developer 10 volume or V10 = 3% Hydrogen Peroxide
Developer 20 volume or V20 = 6% Hydrogen Peroxide
Developer 30 volume or V30 = 9% Hydrogen Peroxide
Developer 40 volume or V40 = 12% Hydrogen Peroxide

Available at Pool / Spa supply stores
Baquacil Oxidizer = 27% Hydrogen Peroxide

--- In Homebrew_PCBs@yahoogroups.com, "leeleduc" <leeleduc@...> wrote:
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> 31% HCL, also known as Muriatic Acid. A standard strength I buy at just about any hardware/building supply store. Also available at pool supply stores.
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> --- In Homebrew_PCBs@yahoogroups.com, DaveC <davec2468@> wrote:
> >
> > What strength hcl are you using? The ratio is easily understood, but 
> > it all depends on the strengths. (I see you use 3 percent h2o2.)
> > 
> > Thanks
> > Dave
> > 
> > -=-=-=-
> > 
> > >I use this technique all the time. I can do a 4X6 inch board in 
> > >about 2 minutes. I use 1 Part HCL and 2 Parts 3% H2O2. I make just 
> > >enough etchant to cover the board about 1/8 to 1/4 inch and lightly 
> > >brush the surface with a foam Paint brush. I etch at room 
> > >temperature. Works very well for me.
> > >
> > >I've also tried 1 part HCL and 2 parts 12% H2O2 but the reaction was 
> > >too fast and hot to control easily.
> > >
> > >
> > >
> > >--- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@> wrote:
> > >>
> > >>  I see some people get very fast etch times with a sponge and 
> > >>ferric chloride...
> > >>
> > >>  But has anyone tried that method with the HCl and H2O2 solution, 
> > >>or the cupric chloride?
> > >>
> > >  > Or anything else for that matter?
> >
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