What type of preparation needs to be done, and does a top-coat need to be applied after using Jax Iron Steel and Nickel Blackener?
You can finish steel pieces any way you want (polish or satin), then wash them well – remove all oil, lacquer, grease, wax and polishing compound. Depending on what condition the parts are in, you may have to use more than one type of cleaner to get it all done. We like to start with mild cleaners like Dawn dishwashing liquid and work up to more unpleasant ones if necessary. Jax Iron Steel and Nickel Blackener is not rust preventer, so consider the environment where the finished products will live—you can finish with wax, oil or lacquer, or you can leave them uncoated.