How long will Rustbeeter™ take to de-rust metal, especially heavily scaled parts?
The heavier the rust, the longer the soaking time. An average piece of metal with average rust will be cleaned within three to seven days. Heavily scaled rust will take longer, perhaps several weeks. Knock off loose scale with a hammer and then keep soaking the part in Rustbeeter™ as long as it takes to remove all the rust. There are two types of rust. Red rust is common and easy to remove. Black rust, however, is very hard and dense, can be quite difficult to remove and might require longer soaking times. It might also be necessary to mechanically remove the black rust. Heavily scaled parts will sometimes contain black rust.
