A big concern for this table was to design it with stability to support sewing machines and handle their vibrations and also to allow full access underneath it. That meant a center stretcher couldn't be used in its' design. The apron is 4 1/4" wide which allowed using offset tenons. Here's a picture of how they were designed:
As of now, the two ends of the table are assembled so today will find me doing the drawer runners, drawers, and starting work on the top. Happy to say that Diane will paint it, I have an aversion to painting wood!