There is also molasses as a passive bath. You buy the molasses pellet
feed that is sold for horses, mix it into water to make a slurry and
toss the parts in. Let them sit 1- whatever (depends on how bad the rust
is) days and when you take them out wash them clean.

--
Steve Williams

"Grant Erwin" wrote in message
...
By the way, there is another EDR method rarely mentioned on this NG,
not
mentioned in any of the normal derusting papers. Orrin, this one may
interest you. The method is passive rather than active -- in other
words,
you don't have to add energy in the form of electricity. No more
wires.
Simple. Make up some strong hot lye, dissolve in a chunk of zinc, and
drop in the rusty part. The zinc reduces the oxidized iron.

There are Web pages about this -- google on lye and zinc and you'll
see 'em.

If you don't think you have any zinc, you're likely wrong. Many
inexpensive
cast metal items are made mostly of zinc. Car door handles, mirror
bases,
lamp bases, stuff like that. Try a coarse file on it, if it peels away
like
butter that's the stuff. It's been posted on this NG that lye will
bubble on
zinc (pot metal) but not on aluminum.

Grant




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