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2. 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.

3. Chemical-mechanical polishing - Wikipedia

   en.wikipedia.org/wiki/Chemical-mechanical_polishing

   The pad and wafer are pressed together by a dynamic polishing head and held in place by a plastic retaining ring. The dynamic polishing head is rotated with different axes of rotation (i.e., not concentric). This removes material and tends to even out any irregular topography, making the wafer flat or planar. This may be necessary to set up the ...

4. Abrasive - Wikipedia

   en.wikipedia.org/wiki/Abrasive

   Inflatable tyre repair kits (which, on bicycles particularly, are actually patches for the inner tube rather than the tyre) require use of an abrasive so that the self-vulcanising cement will stick strongly. Inadvertently, people who use knives on glass or metal cutting boards are abrading their knife blades. The pressure at the knife edge can ...

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   www.aol.com/lifestyle/best-gifts-for-seniors...

   The 45-inch handle means you can do the work fully upright, using the strength of your legs. Just hold it over the weed, step on the head and twist. Leverage is built into the design.

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   Up to 38 percent off TVs — Top Pick: 55-inch TCL Smart Android TV (on sale for $379, was $600) Up to 60 percent off soundbars — Top Pick: Vizio V-Series 2.1 Home Theater Sound Bar (on sale for ...

7. Polishing (metalworking) - Wikipedia

   en.wikipedia.org/wiki/Polishing_(metalworking)

   While used less extensively than traditional mechanical polishing, electropolishing is an alternative form of polishing that uses the principles of electrochemistry to remove microscopic layers of metal from a base surface. [3] This method of polishing can be fine-tuned to give a wide range of finishes, from matte to mirror-bright.