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What are sharpening stones made of?

What are sharpening stones made of?

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Sharpening stone whetstone oil stone sharpen grind hone blade honing tool cutting tool edge tool cut wonkee donkee tools DIY guide Sharpening stones are typically made from one of three materials – novaculite, aluminium oxide, or silicon carbide.¬†Traditional oil stones are natural stones commonly made from novaculite. These types of stone were chiefly quarried in Arkansas, which is where the “Arkansas Stone” derives its name. Natural stones are rarely quarried now as synthetic stones are easier and cheaper to make.
Sharpening stone whetstone oil stone sharpen grind hone blade honing tool cutting tool edge tool cut wonkee donkee tools DIY guide

Novaculite

Novaculite is a type of sedimentary rock. It is made up of microcrystalline quartz and varies from white-grey to grey-black in colour. Its micro-crystal structure makes it very hard and dense, which is why it is perfect for use as a sharpening stone.

Sharpening stone whetstone oil stone sharpen grind hone blade honing tool cutting tool edge tool cut wonkee donkee tools DIY guide

Aluminium Oxide

Aluminium oxide is a chemical compound made up of aluminium and oxygen. It is frequently found in its crystalline form, varieties of which make up precious stones such as sapphire and ruby, though is mass produced as a powder for use as an abrasive.

Sharpening stone whetstone oil stone sharpen grind hone blade honing tool cutting tool edge tool cut wonkee donkee tools DIY guide

Silicon Carbide

Silicone carbide is a chemical compound combining silicon and carbon. It also known as carborundum. Although rarely forming in nature, it is manufactured as a powder for use as an abrasive. Powdered abrasives are formed into solid blocks or “stones” by a process called sintering.

Sintering

Sharpening stone whetstone oil stone sharpen grind hone blade honing tool cutting tool edge tool cut wonkee donkee tools DIY guide Sintering is a process whereby powder particles are formed into a solid mass by compression and heat.
Sharpening stone whetstone oil stone sharpen grind hone blade honing tool cutting tool edge tool cut wonkee donkee tools DIY guide A sharpening stone is made of thousands of tiny particles that have been compressed together using the process of sintering.
Sharpening stone whetstone oil stone sharpen grind hone blade honing tool cutting tool edge tool cut wonkee donkee tools DIY guide As a tool or blade is drawn across the stone, these particles abrade the metal to varying degrees, depending on the size of the grit particles.

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