Homebrew PCBs

It wasn't a violent reaction, but there WAS some buibbles initially. THe
traces were only  a 16th of an inch, but, it seemed to take it right off the
board...

Kim

----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, December 20, 2005 12:12 PM
Subject: Re: [Homebrew_PCBs] Newbie to PCB's...


> On Mon, 19 Dec 2005 05:17:39 +0100, Kim Currier <kimcurrier@...>
> wrote:
>
> > HEllo Group...
> >
> >
> > I tried using the toner transfer method, and got the PCB latternt o
> > transfer,a nd had no problems getting the paper off the board.
> > HOWEVER...
> >
> >
> > When I mixed a solution of 1 parts of Muriatic acid with 2 parts of
> > Hydrogen Peroxide, I started ectching the board, and it actually ate
> > the traces OFF the board! What did I do wrong?
> >
> >
> > Thanks in advance...
> >
> >
> > Kim
>
>
> What sort of concentrations are we talking here with the wet chemicals?
> If it is anywhere near what they are sold here you made a much too strong
> etchant that will eat just about anything ;-)
>
> If there wasn't a violent reaction with bubbles and stuff your etchant
> wasn't too strong and there's a problem with the resist/toner.
>
> ST
>
>
>
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