Abstract: A saw blade of the circular type for use in an electric powered saw for cutting arcuate kerfs in lumber includes a central mounting aperture coincident with a first plane perpendicular to a rotational axis, and a blade mounting portion surrounding the mounting aperture and having an annular configuration arcuate in its cross-section from its inner periphery at the aperture to its outer peripheral margin where it joins with an intermediate annular blade portion that extends generally to a second plane generally at the outer peripheral margin of the central blade mounting portion. Joined with the outer peripheral margin of the intermediate blade portion is a toothed outer peripheral portion extending angularly in a truncated cone or dished configuration generally to a third plane on the opposite side of the first plane from the second plane. Appropriately set teeth are formed on the outer periphery of the toothed outer peripheral portion and extend generally to the third plane.