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  2. Screw extractor - Wikipedia

    en.wikipedia.org/wiki/Screw_extractor

    The extractor is then inserted into this hole and turned in the direction opposing the stuck screw's original one, usually using a tap wrench. As the extractor is turned, the flutes on the tool dig into the screw, causing it to lock tightly and withstand the applied torque required to remove the screw. [1]

  3. Penetrating oil - Wikipedia

    en.wikipedia.org/wiki/Penetrating_oil

    A 400 ml can of penetrating fluid from British retailer Wickes. Penetrating oil, also known as penetrating fluid, is a low-viscosity oil.It can be used to free rusted mechanical parts (such as nuts and bolts) so that they can be removed, because it can penetrate into the narrow space between the threads of two parts.

  4. Cheater bar - Wikipedia

    en.wikipedia.org/wiki/Cheater_bar

    Due to the potential problems associated with a cheater bar or snipe, some situations may require an alternative to loosening and removing threaded pipe, screws, bolts or other fasteners. Hydraulic Chain Pipe Wrench – A hydraulic driven wrench which will safely remove threaded pipe from other threaded coupling, valve, etc. while the other ...

  5. Rustproofing - Wikipedia

    en.wikipedia.org/wiki/Rustproofing

    Loose or thick rust must be removed before anti-rust wax like Waxoyl or a similar product is used. [original research?] Structural rust (affecting structural components which must withstand considerable forces) should be cut back to sound metal and new metal welded in, or the affected part should be completely replaced.

  6. Bluing (steel) - Wikipedia

    en.wikipedia.org/wiki/Bluing_(steel)

    Rust bluing was developed between hot and cold bluing processes, and was originally used by gunsmiths in the 19th century to blue firearms prior to the development of hot bluing processes. The process was to coat the gun parts in an acid solution, let the parts rust uniformly, then immerse the parts in boiling water to convert the red oxide Fe 2 O

  7. Impact wrench - Wikipedia

    en.wikipedia.org/wiki/Impact_wrench

    A 1/2" drive pistol-grip air impact wrench. An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft.

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