You are correct Sean, and it is not accurate in description of mechanical action taking place between peg and joint assembly...Except perhaps (as stated) only in the very beginning.



Correct again, and for the clarification of nomenclature (at least in English) when we employ "wedges" in timber frames or furniture...these are typically referred to as... "keyed joints." The action of a "key joint" is a "wedging effect" that effectively and effecently draws the joint very tight, as well as, creates a method of additional tightening in the future and better joint flexiblity...

If any are interest, we can explore this topic as found in Asian timber framing systems as well, and the applicable nomenclature and joint descriptions...