If you need

If you need to give a rusty plaque from the surface, then you can use ordinary citric acid that penetrates deep into the surface, and you can easily get rid of rust. If you can use a dining soda to remove rusty spots. To do this, you will need to sprinkle soda to the surface where a rusty spot appeared, and rub it after 20-30 minutes and thus remove the stain completely.