The Crescent Nicholson single-cut bastard mill files sharpen mill or circular saws and are ideal for draw filing and finishing metals. The rectangular shape lets you smooth and sharpen straight surfaces. 2 square edges allow you to make grooves fixed at the same width as the file and all sizes taper slightly in width to improve access in slots.
Bastard cut, American pattern mill file
Sharpens mill or circular saws
Single-cut texture on the sides and edges for applying a smooth finish