How to Remove Rust From Metal: Safe Steps
To remove surface rust from metal, brush away loose flakes, then apply either a baking-soda-and-water paste or lemon juice with salt. Leave the treatment for a few hours, scrub, rinse, and dry completely. For heavier rust, use a labeled rust remover according to its instructions. Stop if the metal is deeply pitted, thin, plated, or structurally weakened.