ply wood

How is plywood made?

Plywood panels are fabricated from multiple layers or plys of softwood veneer glued together with the grain direction of each layer of veneer perpendicular to that of the adjacent layers. These cross-laminated sheets of wood veneers are fastened together with a waterproof phenol-formaldehyde resin adhesive and cured under heat and pressure. In British Columbia (B.C.), plywood is made from softwood species, usually Douglas-fir or spruce, pine and fir?(collectively known as?Canadian softwood plywood—or CSP). The most common dimension is 4 feet × 8 feet. Plywood varies in thickness, the most common being ½-inch.  There is a wide variety of choices when it comes to plywood, ranging from smooth, natural surfaces suitable for finish work to more economical unsanded grades used for sheathing. This includes a dozen common thicknes