To cut a tendon, first set up the router table and measure out the exposure then fix the bit in place. Secondly set up the sled and measure the cut made by the bit and tighten the clamp. Then turn on the router and cut out the test tenon, then roll the piece over and cut out the second cheek and shoulder. Finally cut the real tenons and if the tenon’s length exceeds the diameter of the bit you are using, simply make additional passes with the workpiece pulled away from the stop.