I wasn’t prepared for how much different it is to try to cut a Dado along the grain. The fit is snug thanks to Paul’s cut the face and then measure the back line of the dado with the board inserted. I’m amazed how this works every time. I can hear him saying, “self supporting”. Mine is self supporting so I give myself credit for that and the front joint line is pretty crisp and the board sits in square. Time will tell when I go to glue it up.
I used the router plane to make sure the short dado was at the same depth as the shelf dado. One done. One more to go.