What is Mortis?

A mortise is a cut-out space made in a piece of wood or another material so that another piece can fit into it.

Definition

A mortise is a hole, slot, or recess cut into a material to receive another component.

Purpose

A mortise is usually created when two parts need to fit together. In woodworking, it is commonly paired with a tenon to form what is called a ‘mortise and tenon’ joint. 

This type of joint is often found in furniture, doors, and timber structures. Mortises are also used for mortise locks, which are installed inside a pocket cut into the door rather than attached to the surface.

Examples of Use

  • Furniture making: Table legs and chair frames often use mortise and tenon joints to connect pieces of wood.
  • Door hardware: A mortise is also used to cut into a door to install a mortise lock.
  • Wood framing: Builders use mortises to join structural wood members together.

Notes

  • The mortise must be sized correctly for the piece that fits into it.
  • Mortise and tenon joints have been used in woodworking for centuries.
  • A well-cut mortise helps create a tighter and more stable fit.

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