I’ve never tried large open areas . . . but, I also had the same
good results with small lines. I have to say, also, that I
wasn’t very impressed with the “acid etching” we did in class. I
expected to see very defined lines, but what we got (with nasty
acid . . . and now that same acid is over 4 years old, and still
at the ART center where I learned the regular method, and in a
glass gallon jug! I dread the thought of some “unknowing” soul
dropping that glass jug!) was very undefined! I can do better
using an electric etching thingie from Sears!!! (It’s shaped
like a dremmel tool, but has a carbon point, there are various
settings for vibration - not easy to control) but it will ETCH.
Sorry, I forgot to mention that the salt/water etching method
does eat alligator clips . . It will desolve those suckers in
no time! I was considering just soldering the copper wire (from
the battery ) to the piece I wanted etched, but haven’t had time
to try that! (I am not sure whether copper is eaten away at the
same rate as alligator clips!, which are not copper.)
I haven’t had a lot of time to try this method . . . too busy
doing other things . . .
The other interesting things I found were that this process
eats alligator clips at a very fast rate. I ended up having to
coat them with resist and tried to keep them above the water as
much as possible. If I use this method again I will allow a
much longer tab for the clip. This process was confusing to me
at first as it seemed to be plating rather than etching the
piece, but I found that the build up was easily removed and
that the underlying silver had indeed been etched.
Are you referring to the “black water” which appears? Yes, there
is a lot of that, but most of it will wash off, or will be
removed after the piece is dropped into pickle.
Anybody else tried this yet? I'd appreciate any tips on
getting this to work better. I do like the fact that I did not
have to purchase any acid or end up with the problems of
disposal of same.
I’m happy to hear that someone else had the same results as I
did, I’m sure if we work on it, we can perfect this method!!! ; )