Abstract: A concavely ground knife blade has a pair of side faces characterized by oppositely-directed, continuous, slightly concave surfaces. Such surfaces have an arcuate profile approximately fitting a large (e.g., 30 inch) radius circle and follow essentially straight line axes which gradually bend toward one another to form a point. The side faces are first ground widthwise along a diameter of a grinding wheel having an end face beveled at a shallow angle to form a frustoconical grinding surface. The side faces are then polished lengthwise. The resultant blade has a median thickness in its midportion which is nearer the back of the blade than the cutting edge.

Abstract: An adjustable balance knife handle is integrally formed of a handle material (e.g., aluminum) formed in two mirror-image halves. Each half has a plurality of cavities disposed along its inner surface. Selected cavities are filled with a weighting material (e.g., lead) to adjust the balance and heft of the knife. Any remaining cavities are filled with a lightweight filler material (e.g., plastic foam) to exclude water from the handle.