Lots of you are probably saying nooooo don't do it hhhaha I know I know well here's the results of my steel pennies. top picture what they used to look like. After sitting in Limon juice and water for 14 hours final results Sent from my iPhone using Tapatalk
Try naval jelly on one like the "before" photos. EDIT: Better yet. Since the lemon worked, try soaking in a dilute solution of distilled water and the jelly. You can experiment with the concentration. All we are doing is taking rust off of a steel surface and there are many commercial products to try.
Naval Jelly has phosphoric acid as the active ingredient. You can also find phosphoric acid in some Calcium/Lime/Rust cleaner products and even in Coca Cola.
