I thought about this more and if you really want to see if this works before attempting on something that you have dear to your heart, why not try some scrap.
If you are close to the country or farm or know a good scrap yard head on over and see if you can find some rusted parts. If they are heavily pitted and small, then boil them in a pot to convert it to the ferro-ferric Oxide. Then sand the top to get it shiny but leave the deeper holes alone and see what happens during electrolysis.
The other option is to buy a cheap double barrel on the auction sites. I think there are a few on AA and GB right now for $15 to $50. You could find a really nasty cheap one and buy it just for a test. If it fails then no harm no foul.
Just thinking about this as this process has merrit on some old parts I got lying around. However those old parts have value, so before I really ruin them I'm going to try some tests.
