Here’s some eye candy for ya (used extensively along with flap cup wheels and disc and lots of polishing for this drill press restore.)

There are cheaper and other methods but besides electrolysis they are all much slower and or messier or smellier. Vinegar,etc will work on the cheap (i used it for a couple of large pieces but it’s slow and smelly…lots more post soak cleanup with vinegar but it will get the job done in a pinch.)