The patented RUSTALL Weathering System is an easy to use product designed to simulate a random rust pattern for weathering model trains, military models, scale autos, and other miniatures. RUSTALL will produce a random rust pattern on metal, styrene, cast resin, and even paper.RUSTALL is non corrosive, dries fast, won't craze plastic and cleans up with soap and water. RUSTALL is quick, with just four easy steps and requires no special equipment to produce professional results.