Acid, specifically citric acid or acetic acid, is a great way to remove rust, particularly if it has formed on parts which can be easily removed and soaked. If, say, you want to remove rust from screws, remove the screws and soak them in vinegar.
Keeping this in consideration, how long do I soak metal in vinegar to remove rust?
Soak the rust-free object in the solution for approximately 10 minutes to neutralize the acid in the vinegar. Next, scrub the object with the abrasive item once more if needed to remove any remaining rust, and then rub it down with a pad soaked with denatured alcohol to remove any excess moisture.
Can you use wd40 to remove rust?
WD-40 helps remove rust by breaking down the bonds between metal and rust. Spray the rusted surface with WD-40, enough to thoroughly soak the area. Spray another application of WD-40 on the surface and let it sit for five to 10 minutes. Use sandpaper to remove any remaining rust.