Although you can cut all the tenons in this project with a standard or dado blade in your tablesaw, a rabbeting bit leaves behind a cleaner surface.

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Although you can cut all the tenons in this project with a standard or dado blade in your tablesaw, a rabbeting bit leaves behind a cleaner surface. You can easily change the tenon length by swapping the guide bearing. Use a large-diameter bearing for short tenons; smaller bearings for longer ones. A small cap screw, secured with a hex key, holds the bearing in place.