Hold the ax by the handle just behind the blade head while wearing heavy canvas or leather work gloves to protect your hands.
Pin the ax to a work table with a C-clamp bolted to the table and the ax handle positioned so that the ax blade is pointed away from the table edge.
Press the edge of the blade at an angle against a sharpening stone or wheel. Pull the file, stone or wheel straight toward and over the blade edge. Sharpen the blade until you can feel a slight metal burr on the opposite side.
Unclamp the ax, turn it over and sharpen the other side of the blade edge in the same manner.
Release the ax from the clamp and insert the blade edge into the sharpening gauge. The ax is properly sharpened if the gauge fits snugly on both sides.
Rub a light coat of machine oil on the metal ax head with a rag until it glistens and store the tool in a dry location.