After the grooves were cut in all 12 pieces (for the three frames), I cut the mortises in the six rails. (Again, the step-by-step procedure for cutting both the mortise and tenon is shown on page 18.)
Basically, the rails are stood on end and clamped to a jig to cut the mortises. Then the tenons are cut with a two-step procedure, first making two cuts to define the shoulders, and then two cuts to trim the faces of the tenons to final thickness.
What you should end up with after all this is a set of three frames with good tight-fitting open mortise and tenon joints and grooves to accept the panels.
Was this article helpful?