Table leg thru tennons?

[Jim Dwight]

Loose tenons may be another option. I would use my domino but a plunge router would also do it. The edges will be rounded, however, but you can fairly easily get a tight fit. With a plunge router, I would make a little jig.

[Thomas McCurnin]

Super accurate layout lines, on both sides. Cut almost to the line then use a chisel to finish the final fitting of the mortise, and a chisel or shoulder plane to finish the tenon to fit. The key is cutting almost to the line.