It's a fox joint or fox wedge joint. http://www.basiccarpentrytechniques.com/Woodwork%20Joints/Woodwork%20Joints%205.html http://www.basiccarpentrytechniques.c

It's a fox joint or fox wedge joint. http://www.basiccarpentrytechniques.com/Woodwork%20Joints/Woodwork%20Joints%205.html http://www.basiccarpentrytechniques.com/Woodwork%20Joints/Wo... (You need to scroll down a ways)