If you want it to look rusted and weathered nothing will do it better than RUSTALL
The RUSTALL Weathering System is an easy to use product designed to simulate a random rust pattern for weathering scale model trains, military scale 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.
RUSTALL is non-flammable, non-toxic, made in the U.S.A. and can be shipped worldwide.