Trunnel

 In

This is the wood peg that holds a mortise and tenon joint together. It is derived from the word “tree nail.” They are most often shaped to a taper from red oak or locust wood. They come in different sizes, 3/4” being the most common. Some mortise and tenon joints take one trunnel to secure them while others take two or three trunnels.

Wooden-Peg-Trunnel-Joinery

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