Plywood has long been an integral part of light-frame wood construction and furniture, but other composite materials, such as
blockboard, are increasingly being substituted for solid wood
and plywood (Morrell 2002). Because of the way it is made,
blockboard is considered a distinct type of plywood (Zanuttini
and Cremonini 2002). Blockboard consists of a central layer
(core) made up of solid wood strips that may contain defects
undesirable for the face of the finished panels. The facing on
blockboard is stiffened and bound together by glued, hot-pressed
rotary-cut veneers. Adjacent veneers are oriented perpendicular
to the grain.