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Lamello Top biscuit joiner with blade extended. Edges of 16mm Medium-density fibreboard with a #0 biscuit, set up to make a right angle joint. A biscuit joiner (or sometimes plate joiner) is a woodworking tool used to join two pieces of wood together. A biscuit joiner uses a small circular saw blade to cut a crescent-shaped hole (called the mouth) in the opposite edges of two pieces of wood or wood composite panels. An oval-shaped, highly dried and compressed wooden biscuit (beech or particle wood) is covered with glue, or glue is applied in the slot.
Using a Biscuit Cutter: To use a biscuit cutter or plate joiner to connect the edges of two boards, begin by checking the boards to make sure that they will line up properly. The two pieces of stock should be of the same thickness and should make consistent contact across the entire length of the joint.n the other hand, a biscuit cutter or plate joiner eliminates these concerns. The blade, which spins at speeds up to 10,000 RPM, is completely housed within the guard of the saw until it is plunged into the stock.