Homebrew PCBs

I got my muriatic acid at the local hardware store - they have it in 
quart and gallon sizes.  Drano is NaOH. I keep very small amounts 
around, and mix as needed, without reusing. I'll bring the waste to 
the hazardous substances dropoff in our county when I've accumulated a bit.

Mark

At 11:20 AM 6/11/2010, you wrote:
>Mark,
>I checked at my local HomeDepot and, although they had muriatic acid 
>for swimming pools, it came in a large, two-pack container. Have you 
>found it in smaller quantities at other hardware store? If so, where 
>and how small?
>
>Also, where do you get your NaOH?
>
>I have been vacillating between using FeCl and CuCl but I have 
>concerned about storage and disposal for both. I am also trying to 
>keep my quantities on hand small, so I am not storing a lot of 
>potentially harmful liquids around my home.
>
>Thanks.
>
>
>
>--- In Homebrew_PCBs@yahoogroups.com, Mark Lerman <mlerman@...> wrote:
> >
> >
> > Whoops - I mean no bubbler or heater used - there is heat and
> > bubbling produced by the etching process.
> >
> >
> > At 10:06 AM 6/10/2010, you wrote:
> > >I don't make a lot of boards, and most of them are quite small, so
> > >I've been looking for a simple, fast way to etch. After experimenting
> > >with a few suggested recipes, I use a 1:1 ratio of  muriatic acid
> > >(31.45%) to 12% hydrogen peroxide. The muriatic acid is available in
> > >any hardware store, the peroxide is easily obtained from a beauty
> > >supply store as "40 volume developer" - get the clear, not the creme.
> > >They are both very inexpensive, and the etching takes 1-2 minutes
> > >with a little hand agitation, no bubbling, no heat. DO THIS OUTDOORS
> > >or with a chemical hood. Then use NaOH to neutralize.
> > >
> > >For an etching container I use a polypropylene storage bin - they
> > >sell them is many sizes and they are very inexpensive.
> > >
> > >Mark
> > >
> > >
> > >
> > >------------------------------------
> > >
> > >Be sure to visit the group home and check for new Links, Files, 
> and Photos:
> > >http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > >
> > >
> > >
> >
>
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>