What is a router plane and how does it work?
Michael Dresdner: Here’s where a picture is worth a thousand words. A router plane, sometimes called a “hag’s tooth plane” (because from one angle it looks like a gaping mouth with but one tooth remaining) is a flat plate of wood or metal — usually oval or round — with two handles and a large hole in the center through which protrudes a single cutter, bent at right angles so that the sharp edge is parallel to the plate. The cutter protrudes below the plate and is used to remove wood in a dado or recess where the edges have already been scribed. See what I mean about a picture?
