PLYWOOD

Plywood is a type of made from thin sheets of , called plies or veneers. The layers are glued together, each with its grain at right angles to adjacent layers for greater strength.There are usually an odd number of plies, as the symmetry makes the board less prone to warping, and the grain on the outside surfaces runs in the same direction. The plies are bonded under heat and pressure with strong , usually , making plywood a type of .