Tenon

A keyed mortise-and-tenon joint is constructed the same as a doweled mortise and tenon joint except that the tenon projects far enough through the mortise to admit the insertion of a tapering key which draws the mortised piece firmly against the shoulder of the tenon.

One soon learned, however, that it was no easy thing to make wood do exactly as one required it. It looked quite easy in the masterly hands of the experienced pattern-maker, but the mysteries of dowelling and mortice and tenon were not uncovered in a week or two.

If there is much gauging for the same size mortise and tenon to be done, and if a mortise gauge is not handy, a simple improvised gauge for the purpose can easily be made with two pieces of wood and four or five steel sprigs…

First we'll tenon this part, then we'll make a mortise that will fit it on that part.