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A method of stone working employed in the smoothing of an edge or surface by rubbing it with a hammerstone or other abrader prior to use. Performed on projectiles or blades so that hafting materials (lashings) would not be cut by sharp edges of the base. Also commonly referred to as Basal Grinding when the base and sides of the stem have been ground. There are varying degrees of grinding, typically referred to as light, moderate or heavy.

Source: LITHICS-Net, Glossary of Lithics Terminology

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