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  2. Chuck (engineering) - Wikipedia

    en.wikipedia.org/wiki/Chuck_(engineering)

    A pin chuck is a specialized chuck designed to hold small drills (less than 1 mm (0.039 in) in diameter) that could not be held securely in a normal drill chuck. The drill is inserted into the pin chuck and tightened; the pin chuck has a shaft which is then inserted into the larger drill chuck to hold the drill securely. Pin chucks are also ...

  3. Screw extractor - Wikipedia

    en.wikipedia.org/wiki/Screw_extractor

    The screw is drilled out with the appropriate drill and drill bushing. The extractor is then hammered into the hole with a brass hammer, because a steel hammer is more likely to cause the extractor to break. The appropriate special nut is then attached to the end of the extractor. The nuts can then be turned with a wrench to remove the screw. [1]

  4. Machine taper - Wikipedia

    en.wikipedia.org/wiki/Machine_taper

    Machine tool operators must be able to install or remove tool bits quickly and easily. A lathe, for example, has a rotating spindle in its headstock, to which one may want to mount a spur drive or work in a collet. Another example is a drill press, to which an operator may want to mount a bit directly, or using a drill chuck.

  5. Collet - Wikipedia

    en.wikipedia.org/wiki/Collet

    The term collet commonly refers to a type of chuck that uses collets to hold either a workpiece or a tool (such as a drill), but collets have other mechanical applications. An external collet is a sleeve with a cylindrical inner surface and a conical outer surface. The collet can be squeezed against a matching taper such that its inner surface ...

  6. Drill bit shank - Wikipedia

    en.wikipedia.org/wiki/Drill_bit_shank

    The drill bit is not held solidly in the chuck, but can slide back and forth like a piston; it does not slip during rotation due to the non-circular shank cross-section, matching the chuck. The hammer of the drill acts to accelerate only the drill bit itself, and not the large mass of the chuck, which makes hammer drilling with an SDS shank ...

  7. Ex-FBI informant accused of lying about Bidens agrees to ...

    www.aol.com/ex-fbi-informant-accused-lying...

    A former FBI informant accused of lying about President Joe Biden and his son Hunter Biden’s alleged business dealings with a Ukrainian energy company has agreed to plead guilty to federal ...

  8. Madison mayor pleads to reporters: 'None of y’all's business ...

    www.aol.com/news/human-decency-madison-mayor...

    The pointed response from the mayor came at the tail end of a tense news conference just over 24 hours after the city of Madison, about 80 miles from Milwaukee, was rocked by its second school ...

  9. Tripping (pipe) - Wikipedia

    en.wikipedia.org/wiki/Tripping_(pipe)

    The drill string will be removed from the wellbore to allow a logging crew to conduct a survey of the well. After the logging is completed at total depth, the crew will run the drill string back into the well and then proceed to lay it down when coming out of the hole prior to installing the final set of casing (the "production casing").