Homebrew PCBs

Thank you very much. Very informative. Exactly what i was looking for.

Regards
Charlie
On Feb 13, 2013 6:54 AM, "scubadogct" <scubadogct@...> wrote:

> **
>
>
> Does the addition of Hydrochloric acid help to maintain its working
> strength also?
>
> --- In Homebrew_PCBs@yahoogroups.com, toddroberts2001@... wrote:
> >
> > In a message dated free areas, I am able to monitor
> > the process.
> >
> > Rick
> >
> > Good point Rick. It sounds like you are trying to see up through the
> > board from the bottom up. Have you tried placing a bulb over top of the
> > etching tub?
> >
> > I use one of those hand-held trouble lights and hold it directly over
> > my etching tray so I can see what is going on with the board
> > and check it every few minutes. Usually it is pretty easy for me
> > to see when the copper is etched off the board. Not making the etchant
> > level more than
> > an inch deep over the board helps also. But I guess when the etchant
> gets
> > too dark
> > it can make it hard to see the board when it is submerged. The Ferric
> > Chloride
> > is already pretty dark to begin with.
> >
> > 73 Todd WD4NGG
> >
>
>  
>


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