After Len Urban of Rancho Mirage, California, sent in his mystery tool featured in the February Stumpers, Dean Miller of Kilgore, Texas, knew “it’s a specialized portable router with a special bit.” Darrell Slimick of Hayward, California, recognized it, too, but admitted: “I must say that I have inside information; I am a locksmith by trade.”
What does a locksmith know about a specialized portable router?
Randy Beauchene of Valley Springs, South Dakota, explains: “The Stumper is a lock mortiser. Clamp it to the edge of a door, turn the handle clockwise, and the router will travel back and forth, routing out the edge of a solid core door so a mortise lock can be installed.”
“Not clearly visible in the picture you provided, there is an adjustment on the…