16px;">plywood is manufactured from softwoods (such as douglas fir, pine and redwood), hardwoods (such as ash, maple and mahogany), or a combination of both.plywood is a sheet material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. This is called ‘cross-graining’ and it is this that distinguishes plywood from laminated veneer lumber.