Auger Bit File

This file is far more versatile than its name suggests. With a cut face and safe (uncut) edges at one end and the reverse at the other, it is suitable for more than just sharpening an auger bit spur without scoring the lip or screw point, or filing the lip without nicking the spur. It can also be used to sharpen brad-point bits and spade bits, improve the fit between a plane frog and body, or dress corner chisels – anywhere you want controlled cutting of one surface without damaging adjacent ones.