Mastering Joinery Joints: The Double End Tenon Connection

by:V-hold Machinery      2023-07-07

Mastering Joinery Joints: The Double End Tenon Connection

There is no denying that sturdy joints are crucial when it comes to woodworking projects. Especially when you’re working with larger and heavier furniture, the joints need to be durable enough to maintain the strength of the entire structure.

If you’re looking to create a joint that can withstand the test of time, then look no further than the connection. In this article, we’ll be taking a closer look at what this joint is, how it works, and how you can master it.

Understanding the Double-End Tenon Connection

The connection is a type of wood joint that is used to join two separate pieces of wood together. The joint’s strength comes from the tenon, which is a protruding piece of wood that is fitted into a corresponding mortise in the other piece of wood. The connection is called so because the tenon is visible on both ends of the joint.

One of the primary benefits of the connection is that it provides a lot of strength while also being aesthetically pleasing. Unlike some other joints, such as the pocket hole joint, the connection is not visible from the exterior of the furniture piece. This means that it can provide the necessary support without interfering with the design.

Creating the Double-End Tenon Connection ― Step by Step

Creating the connection can be a slightly more complicated process than some other woodworking joints, but with careful attention to the process, it is an achievable task.

1. Determine the Tenon Length

The first step in creating a connection is to determine the tenon length. This should be equal to the thickness of the wood that the tenon will be inserted into.

2. Cut the Tenon

Next, cut the tenon from one piece of wood. The tenon should be slightly wider than the mortise. In general, the width of the tenon should be about one-third of the width of the wood that it is being cut from.

3. Mark the Mortise

Mark the mortise on the other piece of wood. This should be the exact same size as the tenon. Be sure to mark it accurately, as an incorrectly sized mortise can render the entire joint ineffective.

4. Cut the Mortise

With the mortise marked, use a mortising chisel or router to cut out the required area. This can be a more time-consuming process than cutting the tenon, as it requires greater precision. The depth of the mortise should be sufficient to accommodate the entire length of the tenon.

5. Test the Fit

Before gluing the joint together, ensure that the tenon fits snugly into the mortise. If it is too loose, then the joint will be weak. If it is too tight, then it may not fit at all. The perfect fit should be a slightly tight fit where you need to apply pressure to push the tenon into the mortise.

6. Glue and Clamp

Once the tenon is placed in the mortise, apply glue to both surfaces in the joint. Use clamps to hold the two pieces of wood together as the glue dries.


Mastering the connection may require some patience and practice, but the end result is a secure joint that looks great and provides solid support. Whether you’re using it for a woodworking project or a furniture renovation, this joint is a reliable option that will stand the test of time. Remember, practice makes perfect, so don't get discouraged if the first joint isn't how you envisioned it. With practice, you’ll soon become a joint-master!

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