The Groove Joint

The Groove Joint

A groove joint, also known as a plow joint, is a woodworking joint that is used to connect two pieces of wood at a right angle. This type of joint is characterized by a groove that is cut into one piece of wood, and a corresponding tongue that is cut into the other piece of wood. When the two pieces are connected, the tongue fits snugly into the groove to form a strong and secure connection.

Where a Groove Joint Works Best

Groove joints are commonly used in the construction of wooden boxes, drawers, and other types of cabinetry. They are also used in the construction of furniture such as desks, tables, and chairs. These joints are also used in the construction of wooden frames for picture frames, mirrors, and other decorative items. The strength and durability of groove joint make them an ideal choice for a wide range of woodworking projects.

Groove Joint Advantages and Disadvantages


  • Hidden Joint – Groove joints are suitable for creating hidden joints, which can help to give a project a clean, seamless appearance. This is especially important for furniture, cabinetry, and other items where the joints will be visible.
  • Strong woodworking Joint – Groove joints are known for their strength and durability, making them a popular choice for many woodworking projects, especially furniture and cabinetry. The interlocking design of the joint helps to distribute stress evenly, reducing the likelihood of cracking or failure over time.


  • Requires Clean Edges – Groove joints require clean, straight edges in order to fit together properly. This can be a challenge when working with rough or unevenly cut wood.
  • Limited Usage Options – Groove joints are limited in design options, as they are only suitable for joining pieces of wood at right angles. This may not be suitable for projects with more complex designs or shapes.

Materials and Tools Required

To create a groove joint, you will need the following materials and tools:

  • Wood – Groove joints can be made using a variety of different types of wood, but I prefer to use hardwoods such as oak, maple, or cherry. These types of wood are strong, durable, and have a beautiful grain pattern.
  • Saw – A saw is used to cut the wood to the correct size and shape. A table saw or a jigsaw can be used for this task.
  • Router – A router is used to create the groove and the tongue on the pieces of wood that will be joined together. A router table can make this job a lot easier, but a handheld router can also be used.
  • Router Bit – A straight or plow bit is used to create the groove and tongue.
  • Chisels – Sharp Chisels are used to clean up and refine the groove joint after it has been cut.
  • Clamps – Clamps are used to hold the pieces of wood in place while the glue is drying.
  • Wood Glue – Wood glue is used to bond the groove joint together.
  • Measuring tape or ruler
  • Pencil
  • Sandpaper (various grits)
  • Finish of your choice (optional)

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