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2. Diamond grinding cup wheel - Wikipedia

   en.wikipedia.org/wiki/Diamond_grinding_cup_wheel

   There are two common methods to manufacture diamond grinding cup wheels: hot pressing and cold pressing. The hot pressing method is to directly sinter the diamond segments in molds under a certain pressure in the dedicated sintering press machine, and then fix or connect the diamond segments onto the grinding wheel’s body via high-frequency welding, laser welding or mechanical mosaic method.

3. Angle grinder - Wikipedia

   en.wikipedia.org/wiki/Angle_grinder

   Angle grinder. An angle grinder, also known as a side grinder or disc grinder, is a handheld power tool used for grinding (abrasive cutting) and polishing.Although developed originally as tools for rigid abrasive discs, the availability of an interchangeable power source has encouraged their use with a wide variety of cutters and attachments.

4. Crane (machine) - Wikipedia

   en.wikipedia.org/wiki/Crane_(machine)

   While the earlier 'compass-arm' wheel had spokes directly driven into the central shaft, the more advanced "clasp-arm" type featured arms arranged as chords to the wheel rim, [23] giving the possibility of using a thinner shaft and providing thus a greater mechanical advantage. [24] Single treadwheel crane working from top of the building

5. 'Extraordinarily alarming': Mayorkas condemns social media ...

   www.aol.com/extraordinarily-alarming-mayorkas...

   Homeland Security Secretary Alejandro Mayorkas called language used by some social media users after Brian Thompson's death "extraordinarily alarming."

6. Water wheel - Wikipedia

   en.wikipedia.org/wiki/Water_wheel

   A water wheel is a machine for converting the kinetic energy of flowing or falling water into useful forms of power, often in a watermill. A water wheel consists of a large wheel (usually constructed from wood or metal), with numerous blades or buckets attached to the outer rim forming the drive mechanism. Water wheels were still in commercial ...

7. Kirk Douglas - Wikipedia

   en.wikipedia.org/wiki/Kirk_Douglas

   Kirk Douglas (born Issur Danielovitch; December 9, 1916 – February 5, 2020) was an American actor and filmmaker.After an impoverished childhood, he made his film debut in The Strange Love of Martha Ivers (1946) with Barbara Stanwyck.