Hole Making

Hole Making
By:Source: Wikipedia
Published on 2011-08 by Books LLC, Wiki Series

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 30. Chapters: Drill bit, Drill and tap size chart, List of decimal-fraction equivalents: 0 to 1 by 64ths, Drill bit sizes, Laser drilling, Hole punch, Drill bit shank, Boring, Single-pass bore finishing, Hole saw, Gun drill, Jig borer, Brace, Friction drilling, Blind hole, Pilot hole. Excerpt: Drill bits are cutting tools used to create cylindrical holes. Bits are held in a tool called a drill, which rotates them and provides torque and axial force to create the hole. Specialized bits are also available for non-cylindrical-shaped holes. The shank is the part of the drill bit grasped by the chuck of a drill. The cutting edges of the drill bit are at one end, and the shank is at the other. Drill bits come in standard sizes, described in the drill bit sizes article. A comprehensive drill and tap size chart lists metric and imperial sized drills alongside the required screw tap sizes. The term drill can refer to a drilling machine, or can refer to a drill bit for use in a drilling machine. In this article, for clarity, drill bit or bit is used throughout to refer to a bit for use in a drilling machine, and drill refers always to a drilling machine. Drill bit geometry has several aspects: Most drills for consumer use have straight shanks. For heavy duty drilling in industry, drills with tapered shanks are sometimes used. The diameter-to-length ratio of the drill bit is usually between 1:1 and 1:10. Much higher ratios are possible (e.g., |aircraft-length| twist drills, pressured-oil gun drills), but the higher the ratio, the greater the technical challenge of producing good work. Titanium nitride coated twist bitMany different materials are used for or on drill bits, depending on the required application. Steels Others These drill bits can be used in wood, metal, plastic, and most other materials. The twist drill bit is the type produc...

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Book which was published by Books LLC, Wiki Series since 2011-08 have ISBNs, ISBN 13 Code is 9781233075539 and ISBN 10 Code is 1233075535

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