Craftsman 301 Qualification Practice Exam

A mortise and tenon joint is a classic woodworking joint created by forming a mortise—a hole or recess—into one piece of wood, which is then matched with a tenon, a projection or tongue on the other piece of wood. This joint design allows for strong and stable construction, making it ideal for situations where a tight, flush connection is needed, such as in frame assembly or in furniture-making.

The mortise fits the tenon snugly, allowing the two pieces to interlock securely when assembled. This type of joint is often reinforced with glue, but it relies primarily on the geometric shape and fitting of the mortise and tenon to provide strength and alignment. It is a traditional joint that has been used for centuries in various types of woodworking.

Other methods, such as cutting matching angles, securing pieces with nails, or simply gluing, do not create the same level of interconnection and structural integrity as the mortise and tenon design. The unique construction process of a mortise and tenon joint sets it apart as one of the most effective ways to join wood pieces in woodworking.