I have been wanting to make some of my own pen boxes but am stumped as to how to make the groove. I have routers and a small shaper. Making a groove the full length of a piece of wood is no problem. But making that groove without running out the ends is what I can't figure out how to do. Have considered using the drill press but all ideas I have come up with require at least one more hand. Using a dado on the table saw presents it's own set of problems as well. Ideas SVP.<!-- Signature -->