Plywood is commonly used in construction and manufacturing. We see this magic material being used in home interiors and large buildings. In fact, some versions of plywood are also used in shipbuilding. Plywood is an assemblage of wood veneers bonded together to produce a flat sheet. While it can be tailored to suit an extensive range of applications, the normal product consists of at least 3 plies, with the grain in the alternate plies running at right angles.