Bonding & Jointing - Wooden Biscuits
Biscuits are predominantly used in joining sheet goods such as plywood, particle board and medium-density fibreboard.

They are sometimes used with solid wood, replacing mortise and tenon joints as they are easier to make and almost as strong. They are also used to align pieces of wood when joined edge-to-edge in making wider panels. It is important to use the same face when cutting the slots, so the boards are perfectly flush.

Biscuits are also used to align edges of workpieces, such as when forming a 90 degree angle with your materials. The biscuit provides a quick means of getting a perfectly flush joint, while at the same time reinforcing the joint.