Hand stencils made by blowing pigment over a hand held against a wall, were techniques found from over 3500 years ago. Stenciling produces an image or pattern by applying pigment to a surface over an intermediate object with designed gaps in it. This creates the pattern or image by only allowing the pigment to reach some parts of the surface. The stencil is both the resulting image or pattern and the intermediate object; the context in which stencil is used makes clear which meaning is intended. In practice, the stencil is usually a thin sheet of material, such as paper, plastic, wood or metal, with letters or a design cut from it, used to produce the letters or design on an underlying surface. The key advantage of a stencil is that it can be reused, for repeatedly and rapidly producing the same letters or design. Typically they are made with the intention of being reused. To be reusable, they must remain intact after a design is produced and the stencil is removed from the work surface.
Stencil cuts in half round or complete round shaped metal to attach pipe to stencil and spray with ink . Used in metal fabricated product in engineering or manufacturing industry to paint in pipes of various diameter, Gym Equipments etc.