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Biscuit Jointer[edit | edit source]

A biscuit jointer machines a groove of fixed depth & width into a piece of lumber. The grooves are of set standard sizes. An oval "biscuit" of pressed beech is placed into the groove. This biscuit expands when exposed to a water-based glue, thus strengthening the joint. In some cases biscuit jointing provides a stronger joint than traditional dowel joints.