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  2. Machine taper - Wikipedia

    en.wikipedia.org/wiki/Machine_taper

    Tapered shank tools are removed from a socket using different approaches, depending on the design of the socket. In drill presses and similar tools, the tool is removed by inserting a wedge shaped block of metal called a "drift" into a rectangular shaped cross hole through the socket and tapping it. As the cross section of the drift gets larger ...

  3. Bottom hole assembly - Wikipedia

    en.wikipedia.org/wiki/Bottom_hole_assembly

    Rotary assemblies [2] are commonly used where formations are predictable and the rig economics are an issue. In such an assembly the weight of the drill collars gives the BHA the tendency to sag or flex to the low side of the hole, collar stiffness length and stabiliser diameter and placement are engineered as a means of controlling the flex of the BHA.

  4. Drill - Wikipedia

    en.wikipedia.org/wiki/Drill

    A drill press Drill press (then called a boring machine) boring wooden reels for winding barbed wire, 1917. A drill press (also known as a pedestal drill, pillar drill, or bench drill) is a style of drill that may be mounted on a stand or bolted to the floor or workbench. Portable models are made, some including a magnetic base.

  5. List of screw drives - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_drives

    Tamper-resistant versions with a pin in the recess are available. Metric sizes of the hex socket are defined by ISO 4762 (socket head cap screws), ISO 4026 (socket set screws with flat point), ISO 4027 (socket set screws with cone point), ISO 4028 (socket set screws with dog point), and ISO 4029 (socket set screws with cup point).

  6. Walker-Turner - Wikipedia

    en.wikipedia.org/wiki/Walker-Turner

    Benchtop Walker-Turner Drill Press Walker-Turner Co. was founded around the end of the 1920s by Ernest T. Walker and William Brewer Turner , who built machines for home and light industrial use. It was acquired by Rockwell Manufacturing Co. in 1956 and Walker-Turner branded machines continued to be sold into the 1960s.

  7. FBI seizes websites that North Koreans allegedly used to ...

    www.aol.com/fbi-seizes-websites-north-koreans...

    The FBI has seized multiple websites that North Korean operatives used to impersonate legitimate US and Indian businesses in a likely effort to raise money for the nuclear armed-North Korean ...

  8. 5 Foods That Will Help You Live for 100 Years, According to ...

    www.aol.com/5-foods-help-live-100-194400761.html

    That’s because diet can influence key aging mechanisms like inflammation, cellular repair, and insulin sensitivity. These all play critical roles in determining lifespan, explains Dr. Darshan ...

  9. Horse's Adorable Response to Seeing a Hair Dryer For the ...

    www.aol.com/horses-adorable-response-seeing-hair...

    Follow us on YouTube for more entertaining videos. Or, share your own adorable pet by submitting a video , and sign up for our newsletter for the latest pet updates and tips. Show comments