Graphical Construction Glossary >> Tools. >> Hand Tools >> Auger Bit

Auger Bit

In woodworking, a tool for drilling holes in wood.

On the left above are two augers and an extension socket to join rods to an auger to drill long holes. These are all old hand augers. The round socket takes a wooden cross bar that makes the tool look like a letter "T". The tool is worked two handed.

The wood auger typically has a small lead in section at the tip that in old hand augers is fairly course. Machine driven augers sometimes need a finer lead in screw.

On the right is an auger for use in an electric drill with a smooth plane shank. Some of them have three flats on the shank to aid the grip of the chuck.

Note that the modern bit has a spur to first score a circular cut and a flat section to remove the wood.

A modern quick cutting auger from Rockler

If you live in the US you can find out more about these bits on this Rockler site page.

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