On Wed, 23 Jan 2013 09:57:23 -0500, MLightner
wrote:

On Tue, 22 Jan 2013 18:10:09 -0500, DoN. Nichols
wrote:


Take 'em in the _house_, silly boy.

Fumes from either approach have some degree of acid, so I don't
want to run the de-rusting near other thins which could be rusted. Thus
outdoors operation is called for.

Enjoy,
DoN.




Also, you gotta be careful of the hydrogen accmulation with electrolytic
derusting - DAMHIKT

If you're generating that much hydrogen, you're using too much
amperage.

People seem to think you want a full boil. Actually, you just want
enough to produce a bubble or two.

In archaeological work, they use about 2-10 mA/cm^2 of surface, max.
That's too slow for ordinary de-rusting, but adjust power down until
there are no more than a few bubles being generated at a time. It
works better, although it takes longer. And you won't generate enough
hydrogen to worry about it.

Scraper