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Sharpening Glossary

Arkansas Stone – a stone quarried from Ozark novaculite (silicon quartz). Due to their unique crystalline structure, Arkansas stones polish as they sharpen, imparting a keen smooth edge/surface. Available in different grits, these stones are listed in order of coarsest to finest: Washita, Soft Arkansas, Hard Arkansas, and Hard Translucent Arkansas.

Bench Stone – an abrasive product in block form used for sharpening knives, tools, etc.

Bevel – the angle or inclination of a line or surface that meets another at any angle but 90 degrees.

Burnisher – a tool, usually with a smooth round surface used to turn over a burr on scrapers.

Crystolon Stone - a stone manufactured with silicon carbide abrasives. These are the fastest cutting oil stones we carry. If speed is more important than the ultimate quality of the edge, the Crystolon bench stones are a good choice. Gray in color. Available in coarse, medium, and fine grits.

Diamond Stone - a stone containing small diamonds attached to the face of a metal plate and used for sharpening knives, tools, etc. The two greatest advantages of the diamond stone are the very fast cutting that the diamonds provide and the flatness that is retained by the diamond stone. Available in Extra Fine, Fine, Medium, Coarse, and Extra Coarse grits.

Edge - the line of intersection of two surfaces. A highly sharpened edge is one where the two surfaces are highly polished to form a very fine edge.

Grit - the numeric term used to describe the number of openings per linear inch; a measurement of abrasive grains. Low grit numbers are coarser and high grit numbers are finer.

Hone – a fine-grained whetstone for giving a keen edge to a cutting tool. Or to sharpen on a fine-grained whetstone.

India Stone – a stone manufactured with aluminum oxide abrasive. Preferred for imparting durable, smooth-cutting edges and for close tolerances. Orange/brown in color. Available in coarse, medium and fine grits.

Keen - finely sharpened.

Oil Stone – a stone made of one of three following materials: novaculite, aluminum oxide, or silicon carbide which uses oil as a means to remove the swarf. The good overall performance and the modest price are the oil stone’s greatest assets.

Serrated – having a notched edge or sawlike teeth

Sharpening – the process of removing material to create a cutting edge

Steel – a metal rod designed for sharpening or realigning the edge on knives.

Strop – any of several devices used for sharpening. Made out of a strip of leather or other flexible material.

Swarf – fine metal filings or shavings removed by a cutting tool, sharpening stone, or abrasive.

Water Stone – a stone, available in both natural and synthetic material, that can be used to sharpen knives and tools with water as a means to remove the swarf. A fast cutting stone, it tends to wear unevenly which requires occasional flattening. Available in 220, 1000, 4000 and 8000 grits.

Whetstone – a stone used for sharpening knives, tools, etc.

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