Used in chair and table frames and is very strong. Both
square and round tenons are used for furniture construction. Old
furniture is usually put together with mortise-and-tenon joints, which
consist of a prong held in a hole. With mortise-and-tenon joints a
prong or tongue of wood -- the tenon -- is secured in a hole -- the
mortise -- in the joining piece. If the joint is blank or stopped, the
mortise doesn't extend completely through the joining piece and the end
of the tenon is not visible on the outside of the joint.
Mortise-and-tenon joints are extremely strong; they're used mostly in
chairs and tables but have many uses.
