Vinegar soaking method: If there is not much rust on the PVC cartoon three-dimensional doll keychain, but there are only some sporadic rust on the surface, you can use vinegar to soak the rust to make the rust loose and not so firm, and then wipe it with a rag. The soaking time is half an hour to an hour, and the amount of vinegar used can make the key completely submerged.
Wire mesh grinding: This method is suitable for the rust on the key. The wire mesh used for brushing the pot is dipped in water to polish the key, and the rust is washed away with water continuously. After most of the rust was removed, soak it in vinegar and dry it with a rag.
Nail file: Generally, nail clippers are equipped with a nail file, which is an iron sheet with horizontal stripes, which can have a polishing effect. This method is also suitable for situations where there is a lot of rust, and some keys are cross-shaped, only Can be sharpened with a file. The method is to take one end of the nail file and rub it a few times in the gully of the key, and the rust will fall off.
Iron sandpaper grinding: iron sandpaper is sold in hardware stores. Iron sandpaper is mainly used to remove rust. It is better than grinding with a file, and it is more lubricated and will not affect the shape of the key. It is easy to form a key by grinding with a file. Deformed, and ultimately unable to open the lock. The method of application is to fold it with iron sandpaper, place the key between two layers of iron sandpaper, and then scrub back and forth.
