An extraction bedplate includes a body and a plurality of apertures through the body. Each of the plurality of apertures includes a first end and a second end wider than the first end. At least three obtuse angles are in each of the first and second ends. A method for manufacturing an extraction bedplate includes creating a plurality of apertures through a body wherein each aperture comprises a first end, a second end wider than the first end, and at least three obtuse angles in each of the first and second ends.