Abstract: Waste ejecting blade assemblies for hand-held cutting tools and methods for cutting fiber-cement materials are disclosed herein. In one embodiment, the blade assembly includes first and second fingers attachable to the cutting tool, and a reciprocating cutting member between the first and second fingers. The cutting member includes a body pivotally coupled to the first and second fingers and a blade projecting from the body. The blade includes a top surface between opposing side surfaces and a waste ejection member at a rear portion of the top surface. The waste ejection member includes a ramp having a front edge, a back edge, and an inclined portion between the front and back edges. The inclined portion is canted toward the first or second finger and configured to direct a waste portion of the workpiece away from the blade toward the first or second finger.

Abstract: Blade assemblies for reciprocating wallboard tools and methods for cutting wallboard are disclosed herein. In one embodiment, the blade assembly includes first and second fingers attachable to a cutting tool, and a reciprocating cutting member between the first and second fingers. The cutting member can have a body pivotally coupled to the first and second fingers, and a blade projecting from the body. In one embodiment, the blade can have a top surface with an arcuate portion having a generally constant radius defining a cutting surface that is at least approximately coterminous with a distal end. In another embodiment, the blade can have a top surface with an arcuate portion having a radius of greater than approximately 2 inches. In another embodiment, the distal end of the blade can have a nose with a radius of at least approximately 0.3 inch. In another embodiment, the blade can also include a tail projecting away from the top surface.