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2. Hook-and-loop fastener - Wikipedia

   en.wikipedia.org/wiki/Hook-and-loop_fastener

   Hook-and-loop fasteners, commonly known as Velcro (a genericized trademark), hook-and-pile fasteners or touch fasteners are versatile fastening devices that allow two surfaces to be repeatedly attached and detached with ease. Invented in the mid-20th century, they are widely used in clothing, accessories, and various industrial and consumer ...

3. Velcro Companies - Wikipedia

   en.wikipedia.org/wiki/Velcro_Companies

   Hook-and-loop fastener, invented by de Mestral. Swiss electrical engineer George de Mestral who studied at EPFL invented his first touch fastener when, in 1941, he went for a walk in the Alps, and wondered why burdock seeds clung to his woolen socks and coat, and also his dog Milka. [2] [6] He discovered it could be turned into something useful ...

4. Chemical-mechanical polishing - Wikipedia

   en.wikipedia.org/wiki/Chemical-mechanical_polishing

   Generally, these pads are made from porous polymeric materials with a pore size between 30 and 50 μm, and because they are consumed in the process, they must be regularly reconditioned. In most cases the pads are very much proprietary, and are usually referred to by their trademark names rather than their chemical or other properties.

5. Polishing (metalworking) - Wikipedia

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

   The condition of the material at hand determines what type of abrasive will be applied. The first stage, if the material is unfinished, starts with a rough abrasive (perhaps 60 or 80 grit) and each subsequent stage uses a finer abrasive, such as 120, 180, 220/240, 320, 400 and higher grit abrasives, until the desired finish is achieved.

6. Ground glass joint - Wikipedia

   en.wikipedia.org/wiki/Ground_glass_joint

   Crude versions of conically tapered ground glass joints have been made for quite a while, [1] particularly for stoppers for glass bottles and retorts. [2] Crude glass joints could still be made to seal well by grinding the two parts of a joint against each other using an abrasive grit, but this led to variations between joints and they would not seal well if mated to a different joint.

7. S.O.S Soap Pad - Wikipedia

   en.wikipedia.org/wiki/S.O.S_Soap_Pad

   An S.O.S Soap Pad. The soap is the blue substance seen in the pad. S.O.S Soap Pad is a trade name for an abrasive cleaning pad, used for household cleaning, and made from steel wool saturated with soap. In 1917, Irwin Cox of San Francisco, California, an aluminum pot salesman, invented a pre-soaped pad with which to clean pots.