The airbrush is used to work on wooden, plastic, and metal signs, glass signs, and signs on the sides of trucks and buildings. The size of the sign determines which spray tool is used.
Sign painters utilize an array of airbrushes plus various sizes of spray guns.
Most have hobbies. Remote-controlled airplanes and boats are also ideal objects for airbrushed designs or embellishments. Most silk dyes come in a state that makes them easily sprayable. The luminosity of the Mallard duck's neck is developed with overlapping airbrush passes of metallic colors. When done properly, it is indistinguishable from the real thing.