Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "tomservo_9504" 
<tomservo_9504@...> wrote:
>
> Alternatively your local hardware store sells muriatic acid
> (hydrochloric 31%) and pharmacy sells 3% hydrogen peroxide. When
> you're done with it, simply neutralize with baking soda 
(OUTSIDE!). I
> used this method myself recently with good success.
> 

A good alternative to the 3% H2O2 from a pharmacy is '40 Volume' 
hair bleach from a beauty supply store. It's about 12% strength so 
it won't dilute the etchant as much as the 3% does.

In the US, you can purchase it at Sally Beauty Supply for about $5 
for a quart. (BTW, Sally Beauty Supply doesn't require that you have 
a beautician's license to purchase it as many supply stores do.)


Regards, Bob