Recently I needed to shorten the shank of a 3/4-in. hardened steel drill bit. Depressed at the thought of all that time and elbow grease, I devised the method shown in the drawing. With the drill securely clamped to a 2×6, I adjusted it to its highest speed, pressed the lock-on button and let gravity and the hacksaw do all the work. A few drops of oil made for a cool cut.
Dorothy Ainsworth, Ashland, OR