Remove rust with cola
Phosphoric acid is the sour ingredient that balances the sugary taste of the world’s favourite fizzy drink, but it’s got another use — it’s an industrial-strength rust remover capable of transforming reddish iron (III) oxide into yellow-toned ferric phosphate. To repair a rusty object, simply cover it in cola and let the acid get to work. Not only will it help to remove the rust, the layer of iron phosphate will provide some rust proofing, protecting against future corrosion.