A kit for converting a standard router into a saw comprises a rectangular base plate having a through hole in one side thereof. The router may be mounted on the base plate above the hole and when so mounted preferably has one of its handles sticking out over an adjacent transverse edge of the base plate. A D-handle is fixed on the base plate extending perpendicular relative to the transverse edge and parallel to a longitudinal edge of the base plate. The D-handle is not directly connected to the router but is simply affixed to the base plate adjacent the router. The D-handle can be gripped by one hand of the user, and the router handle that sticks out over the transverse edge of the base plate can be gripped by the other hand of the user, and the combined structure can be pushed much like a circular saw with the revolving cutter of the router making an elongated saw cut. Either longitudinal edge of the base plate functions as a guide edge that can be abutted against a fixed guide surface during a sawing operation.