Auger Drill

The absolute best source for sharpening this tool is Leonard Lee's book, The Complete Guide to Sharpening, Chapter 15. (This is a must-have for any sharpener's library.)

Other notes :

• Lead screw must extend beyond any spurs or shoulders on the perimeter of the bit..
• DO NOT change
  1. the center point of the drill bit, or
  2. the diameter of the drill bit (only file the inside of the spurs / shoulders).
• Grind the minimum off the bit.

Notes & Comments

Information regarding Grindstones

Probably best to stay with the drill bit's geometry as supplied by the manufacturer.

More Information

Books & Papers

• The Complete Guide to Sharpening, by Leonard Lee
• TM 9-867 Maintenance and Care of Hand Tools, from the U.S. War Department

Web Sites

• Nick Engler's Workshop Companion page on Sharpening Drill Bits.
• If you have a Fine Wood Working membership, the are good instructions from Vic Tesolin.