Hello Stan,
Get a tub and a few gallons of K-1 Kerosene. Some various brass and fiber brushes, steel wool, rubber gloves etc. The kerosene is not as strong as some commercial solvents but it is east to get, inexpensive and will do a good job with a little work. "Brake Kleen" in a spray can with a little steel whool does a nice finish up, dry with rags. If you have a bench grinder and fit a soft brass or steel wire brush on it this is very useful. Be careful have an extinguisher handy, use safety glasses if you use a wire wheel and rubber gloves for cleaning in the solvents.
Joe Alexander
Blacklick, Ohio