Homebrew PCBs

I think the main question here is not about the CuCl stuff, we understand  
that well, but for copper.
What happens with brass i wouldn't know.

The bubbling normally adds oxygen like H2O2 does, but again, i do not know  
what happenss with the added zinc.

ST


On Fri, 10 Mar 2006 20:20:00 +0100, garydeal <garydeal@...> wrote:

>> I am going to be etching some brass sheets (0.10" thick) for a
>
>> project I am working on.  I will be etching them to 1/2 thickness.
>
>> Would you recommend the peroxide/muriatic solution for this, or
>
>> would something else be better/safer?
>
>
>      Greg,
>
>      I was waiting to see if someone else with more experience would
>
> answer, but I think the 1/3 (37%) HCl and 2/3 pharmacy-type (~3%)
>
> peroxide will probably work for you. I'll be trying to get to trying that
>
> one this weekend - my other mix was a bit *too* effective.
>
>
>> Also, would I be able to regenerate this mix with a bubbler?  I will
>
>> be using the mixture as listed in the files section.
>
>
>      There's recently been a lot of posts on this formula, it's changes
>
> through use, and methods of sprucing it up with the addition of small
>
> amounts of acid or peroxide. I don't know about the bubbler (adding
>
> oxygen?). Since I'm doing rather small quantities I'll probably just
>
> neutralize and mix fresh when I think it's dying.
>
>
>      Please post your results and evaluations if possible.
>
>      -Gary