Research topic: drill

Click to see an enlarged picture
drill. (Image by LHOON, CC)

Related pictures

Click to see an enlarged picture
Click to see an enlarged picture
Click to see an enlarged picture
Rate these pictures

drill

The Columbia Encyclopedia, Sixth Edition
drill tool used to create a hole, usually in some hard substance, by its rotary or hammering action. Many different tools make up the drill family. The awl is a pointed instrument used for piercing small holes. In its early form it was a thorn or a tool of bone or chipped flint; many prehistoric awls of flint have been found. The gimlet, which consists of a cross handle holding a metal shaft with a screw point, is used for boring small holes. Its principle and that of a similar tool, the auger, were known and used in ancient times, but the tools were much improved in the Middle Ages. The auger... Read more
drill
drill 1 / dril / • n. 1. a hand tool, power tool, or machine...procedure to be followed in an emergency. ∎  ( the drill ) inf. the correct or recognized procedure or way of doing something: he didn't know the drill. 3. a predatory mollusk (family Muricidae, class Gastropoda... Read more
Dental Drill
Dental Drill Background The dental drill is a tool used by dentists to bore through tooth enamel as well...primarily of a handpiece, an air turbine, and a tungsten carbide drill bit. Since its development began in the mid 1700s, the dental drill... Read more

Facts and information from other sites



Related research topics

Online videos

The Drill - The Drill

Free newspaper and magazine articles

Free Article "No-point" drill reduces thrust.
Free Article Dealing with a spot drill's true point position.(CNC Tech Talk)
Free Article Choose the best drill point geometry.

For Students and teachers!

HighBeam Encyclopedia provides students and teachers facts, information, and biographies from verified, citable sources, including:

HighBeam Encyclopedia provides students and teachers facts, information, and biographies from verified, citable sources, including: