I use electrolysis all the time for rusty parts & tools. It will take paint off pretty good too. I watched a video where a guy did an entire tractor. Used a big pond liner & made like an above ground pool.
Biggest I've done is those hard plastic kiddie pools they have at the grocery store, for some tripod mounted belt fed parts. Like my little pic to the left.
And I use Arm & Hammer washing soda & rebar. I sandblast the rebars first & between uses.