Homebrew PCBs

Leon Heller
Amateur radio call-sign  G1HSM
Yaesu FT-817ND transceiver
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller
----- Original Message ----- 
From: "Jim Miller" <jim@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, December 13, 2008 2:09 AM
Subject: [Homebrew_PCBs] Potentially stupid or brilliant idea


>I know that placing metal in a microwave can produce "interesting" results.
> However is there any experience with a piece of copper in a cup of water?
> I'm speculating that the water may keep the copper from being the primary
> load on the microwave and also provide a cooling surface for the copper.
>
> Just interested in heating a persulfate etching solution.

I simply place the container in an old washing up bowl with about an inch of 
just boiled water in it. That keeps it nice and hot; etching takes about 5 
minutes with ferric chloride.

Leon