When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Nothing like Muriatic Acid (concentrated Hydrochloric Acid) for removing rust. But HCl is nasty stuff. Try Sufamic Acid (concrete etcher, you can get it at Home Depot) and a little steel/bronze wool/elbow grease.