Cleaning parts with electrolysis.

Here's another great video from my close personal friend, Dan Erlewine.  



I'm a bit of a pack rat and tend to save old transformers when the thing they used to power snuffs it. Looks like I now have another use for them!

That's a good one...

I'm reading that the salt actually generates chlorine gas, hence the caution to ventilate.
Some are suggesting baking soda as a safer alternative.