Homebrew PCBs

Seems to be the combination. Without the heating, it takes about 5 minutes. 
When I do the larger boards, I have a problem of heavily used etchant sitting 
right next to the board, blocking the fresh from getting to it. I do the 
boards flat, and can't get them to float. I haven't tried it with only heat.
On Friday 17 November 2006 10:14, Stefan Trethan wrote:
> On Fri, 17 Nov 2006 15:23:09 +0100, Christopher Hart <kc8ufv@...>
>
> wrote:
> > Sometimes I will use one on small boards. I place the board and etchant
> > in a
> > small glass/ceramic container, put some water in the cleaner, then set
> > the
> > container in that. The one that I use also has a heating element, I use
> > Ferric Chloride etchant (yes, the ugly brown stuff that stains
> > everything),
> > and the boards are usually done in about 2 minutes. With this same
> > etchant,
> > with the boards just sitting there (as I must do for larger boards) it
> > takes
> > about 1/2 an hour to 45 min per double sided board. (currently all my raw
> > board, except the paper thin stuff is double sided.)
>
> Can you rule out it is only the heating which speeds it up?
>
> ST
>
>
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