Changes

[[File:lighterstill.jpg]][[File:Grinding-pipe.jpg|right|frame]]

[[File:lighterstill.jpg]][[File:Grinding-pipe.jpg|right|frame]]

*[http://en.wikipedia.org/wiki/19th_century 1849]

*[https://en.wikipedia.org/wiki/19th_century 1849]

==Definitions==

==Definitions==

*1: tending to abrade

*1: tending to abrade

An '''abrasive''' is a [[material]], often a [[mineral]], that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, [[reflective]] [[surface]] it can also involve roughening as in satin, matte or beaded finishes.

An '''abrasive''' is a [[material]], often a [[mineral]], that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, [[reflective]] [[surface]] it can also involve roughening as in satin, matte or beaded finishes.

Abrasives are extremely commonplace and are used very extensively in a wide variety of industrial, domestic, and [[technological]] applications. This gives rise to a large variation in the [[physical]] and [[chemical]] [[composition]] of abrasives as well as the [[shape]] of the abrasive. Common uses for abrasives include grinding, polishing, buffing, honing, cutting, drilling, sharpening, lapping, and sanding (see [http://en.wikipedia.org/wiki/Abrasive_machining abrasive machining]).  [http://en.wikipedia.org/wiki/File_(tool) Files] act by abrasion but are not classed as abrasives as they are a shaped bar of metal. However, diamond files are a form of coated abrasive (as they are metal rods coated with diamond powder).[http://en.wikipedia.org/wiki/Abrasive]

Abrasives are extremely commonplace and are used very extensively in a wide variety of industrial, domestic, and [[technological]] applications. This gives rise to a large variation in the [[physical]] and [[chemical]] [[composition]] of abrasives as well as the [[shape]] of the abrasive. Common uses for abrasives include grinding, polishing, buffing, honing, cutting, drilling, sharpening, lapping, and sanding (see [https://en.wikipedia.org/wiki/Abrasive_machining abrasive machining]).  [https://en.wikipedia.org/wiki/File_(tool) Files] act by abrasion but are not classed as abrasives as they are a shaped bar of metal. However, diamond files are a form of coated abrasive (as they are metal rods coated with diamond powder).[https://en.wikipedia.org/wiki/Abrasive]

==Quote==

==Quote==

Never be [[afraid]] to go to the stone and make [[sparks]] in your endeavor to pursue the polished edge which you seek. It may only be [[attained]] through the grinding away of the unnecessary in order to [[achieve]] the [[point]]. [[Effort]] must be put forward, and you know you are making [[progress]] when the sparks are flying.  

Never be [[afraid]] to go to the stone and make [[sparks]] in your endeavor to pursue the polished edge which you seek. It may only be [[attained]] through the grinding away of the unnecessary in order to [[achieve]] the [[point]]. [[Effort]] must be put forward, and you know you are making [[progress]] when the sparks are flying.