Plywood board is made of an odd number of cross grain rotary cut veneers.
The weight bearing strength of plywood makes this panel excellent in
regards to bending strength and screw-hold ability.
Overview
Plywood is used in applications that need high-quality, high-strength
sheet material. Quality means resistance to cracking, breaking, shrinkage,
twisting and warping.
Plywood is a type of engineered board made from thin sheets of wood,
called plies or wood 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.