Timber Frame Mortise and Tenon Dimension Labels and Names

Mortise and Tenon Dimension Labels and Names

There are three dimensions needed to make a mortise and tenon joint. However, the names of these three dimensions change depending on which part of the joint you are measuring.
A: Tenon width and Mortise Length.
B: Tenon length and Mortise Depth
C: Tenon thickness and Mortise Width.

Understanding these names is essential when you are laying out matching parts of a joint.