My guess is that more washing soda just increases the current. That's good,
IF 1) the power supply can handle it and 2) the foaming doesn't get too
violent. It depends on the setup. Either one of those issues could be the
limiting factor in any specific setup.
More current means more chemical reaction happens in a given time (also more
heat is generated). A tablespoon per gallon should work but it would probably
clean up FASTER with more soda, until you have so much current that the voltage
starts dropping.
The current is more important here than the voltage is. So if you can switch
from 12 to 6 volts but double the current capacity of the charger (and throw
in more soda), that would also be good, as far as speed goes
Don't use stainless as an electrode. It generates some chromium which is
hazardous.
Richard Thrift
---- David Schweninger <quenty@ntelos.net> wrote:
Richard, Hello
I'm not sure if there is a correct amount. I reference an article by
Andrew Westcott. He tried various % and wound up at 10%. He is
primarily concerned with restoring small artifacts. Then---other than
small, maybe our Healeys qualify.
Google his name. Interesting web site.
Dave
PS I forgot to mention Wescott says to keep metals other than iron
out of the tank. I stripped a steel part with a brass rivet and it
worked fine. maybe it degrades the solution.
On Feb 11, 2009, at 7:21 PM, richard mayor wrote:
Hi Dave, I only have one question, regarding the washing soda. I have
always thought that you only need to use about one tablespoon per
gallon. Does using more enhance the process? Richard
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