Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Christopher Hart" <kc8ufv@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, November 17, 2006 2:23 PM
Subject: Re: [Homebrew_PCBs] Ultrasonic etching tank?


> 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.)

Why not use continous agitation for the larger boards by rocking the
container? They will only take about 10 minutes.

Leon
--
Leon Heller, G1HSM
Suzuki SV1000S motorcycle
leon.heller@...
http://www.geocities.com/leon_heller