I agreeI'm sure others will follow, but electrolysis is the easy way to attack this. I would do a few rounds of that cleaning up whatever you can, then I would start soaking with a penetrating solution if the threads won't turn. I would disassemble as much as possible before starting.
I put it in the tank an hour ago and it's already getting pretty scummy. When do I add the clarifier? About how much for a small tank like this?I use a 44 gallon trash can for my E tank. An ounce or so of pool clarifier added to the mix really brings the rust to the top with the scum. Makes it easy to skim off and the tank stays much cleaner.
I add it after I dissolve the washing powder, it doesn't take very much. I just pour a dash or a smidge I guess. Same thing with the powder, I start with some then add more while mixing with a drill mounted mixer until the amp meter is reading 5 amps at 12v. I don't know if the clarifier eventually reduces the concentration but it really keeps things cleaner.I put it in the tank an hour ago and it's already getting pretty scummy. When do I add the clarifier? About how much for a small tank like this?
Preventing flash rusting right after coming out of the e-tank can be largely prevented by blowing it dry with an air hose. I start by blowing out any holes, then the larger flat areas. Not perfect, but it really helps a lot. Depending on what's going to be done to it next, a mist of WD40 will keep it rust free for a long time. If it's going to be painted, you can still use WD40, but you'll have to give it a lacquer thinner rubdown before painting or the paint will not adhere.If you are going to repaint anyways, and the paint is already loose/easy to strip, then strip the paint *before* electrolysis.
Even if you de-rust now with electrolysis, you will get rust when stripping paint and need to de-rust all over again before painting/refinishing.
If the paint is hard to strip, then electrolysis can help loosen it, though you will need to re-electrolysis (probably) after taking it out and fully stripping the paint, as that always makes surface rust.
Nice vise---my dad has had the quick release version (maybe yours is?) on his main bench since I was born. We have used the hell out of it and it still works like new.
Very nice vise - I have one essentially identical, but Columbian branded-used it a ton for over 30 years. Very much worth the effort to restore!Got this rusty vise from a wet basement and not sure how to proceed with the restoration. Do I go directly to electrolysis or is there an easy way to attack this?
Good advice---if you have an air hose this is definitely the way to go, but be warned---if any parts are not totally dry when you start oiling, then the rust will show up underneath after a week or two. Also, my personal experience is don't oil it if you ever want to paint it---it's very difficult to get the last of the oil out of cast iron, and anything that is not totally de-oiled will not adhere to paint.Preventing flash rusting right after coming out of the e-tank can be largely prevented by blowing it dry with an air hose. I start by blowing out any holes, then the larger flat areas. Not perfect, but it really helps a lot. Depending on what's going to be done to it next, a mist of WD40 will keep it rust free for a long time. If it's going to be painted, you can still use WD40, but you'll have to give it a lacquer thinner rubdown before painting or the paint will not adhere.
Much has been written about Evaporust pro and con. I tried it with a small amount- a quart, I think, and was pleased with the results, though I didn't think it lived up to its press. Pretty darn expensive, too. But, a project (aka "fool's errand") arose that I thought Evap would be the best choice for. I searched around and found that some dramatically less-per-gallon deals can be had on the 3.5 gallon bucket with dip tray. That has proved to be very useful for doing large batches of small things - sockets for instance.
I still favor electrolysis for most things, but Evaporust has its place in my arsenal in the War On Rust.

Rustoleum Hammered CopperNicely done! I like the color, what is it?