Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Etchant recycling
From: "dkesterline" <desterline@...>
Date: 2003-12-28
Hello,
I've been experimenting with toner transfer for a while now, and I'm
starting to see acceptable results. This group has been a great help
in my endevors.
I read some posts in the archives about recycling (revitalizing might
be a better word) Feric Chloride etchant.
As I read the instructions, using two iron nails as electrodes, run
about 1 amp through the solution. (more details would have been
helpfull)
I tried this and my results were less than stellar. The negative
terminal collected particulate copper (kinda looked like a sponge,
but just dust, wiped off easily) and the negative terminal did erode
some (about 1 hour). In the end my etchant looked like brown mud.
Then I tried etching with it and it seemed slower than before I did
it.
Perhaps sombody could advise?
Thanks,
Denny