Any of you hambers try rust removal using molasses & water? No joke! they use this method in Australia & NZ. 7 parts water 1 part molasses. 5 gal pail of feed grade molasses at Blue Seal feeds for $20.00. I have a 275 gal. oil tank split in half & hinged. I can fit doors & fenders in.Only removes rust wont take off paint.Gets where sandblasting cant reach. just power wash the parts after.Wont harm the metal.its takes about 2-3 weeks or more depending on the rust. A friend of mine told my about this & I thought he was nuts till I tried it.