Homebrew PCBs

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
>
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>------------------------------------
>
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