Its tenons are one hole and one sixth long, and one quarter of a hole in thickness.
Lay out and cut the tenons and mortises for the end rails and back rail.
Lay out and cut the mortises for the tenons of the horizontals or rails.
Cut the tenons on the ends of the rails to fit the mortises in the posts.
The four crosspieces are fastened to the legs by means of tenons and mortises.