Black Magic Patina creates a beautiful, rich black patina on iron and steel. It takes only 3-5 minutes to develop and does not produce the quick rust that you normally see with other blackening agents. The first coat will be dark grey, but the finish will become black after a few coats. Rust will develop if a clear sealer is not applied to the completed finish.Black Magic Patina works similarly on bronze, brass, and copper to darken the metal. On zinc and galvanized steel, it creates a weathered black patina. Black Magic Patina does not work on stainless steel or aluminum. It should not be diluted unless you are working on the Metal Coatings.
Before applying this patina, sandblasting or sanding and cleaning is required to remove the oil, oxides, and residues. Water rinsing is a good neutralizer and will not cause rust. Dry after rinsing and between applications, making sure to remove the film left by the patina. Rust will occur if a clear sealer is not applied.
For more information and help check out this awesome guide by Sculpt Nouveau *HERE*