Grindstone (tool)

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Sandstone grinding wheel

A grindstone is a tool used for grinding or sharpening tools.

Early grindstones were made from sandstone, often in the shape of a wheel so that they could be rotated to speed the sharpening process.

Grindstone machines usually have pedals in which to speed and slow the stone to sharpen metal to the point of perfection.

Image:Blacksmith-hammer-anvil-50x50.pngThis metalworking article is a stub. You can help Wikipedia by expanding it.
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