How To Use Brush‑On Urethane Rubber as a Paint

While there is still a small amount of time remaining in the Brush-On 40's pot life, dispense more mixed rubber into a small cup and add So-Strong green tint and So-Strong black tint. Mix the Brush-On 40 and pigments together thoroughly. Add approximately 5 parts mineral spirits to create a thin mixture, about the consistency of milk. Pour this mixture into an airbrush and use to paint the small details. The thinned rubber will flow through the airbrush smoothly.