Spray painting is a painting technique where a device sprays a coating (paint, ink, varnish, etc.) through the air onto a surface. Spray guns evolved from airbrushes, and the two are usually distinguished by their size and the size of the spray pattern they produce. It is typically used for covering large surfaces with an even coating of liquid. Spray guns can be either automated or hand-held and have interchangeable heads to allow for different spray patterns. Single color aerosol paint cans are portable and easy to store.

Prototype before painting needs to be polished.To consider hand polished smooth surface and traces of adhesive does not have significant exposure. We grinding is required before can paint spray dust.For paint PANTONE number is required, this is common all over the world, it provides a qualitative standard for color. All of professional prototype makers have a PANTONE card, so that the client needs related to fuel painting, provide the appropriate PANTONE number is necessary .

When processing materials used in only one nature color and the surface is not good enough.The rapid prototype was to make an exquisite appearance most of by spray painting.