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What do they mean when they talk about sanding tapes with stearate?

What do they mean when they talk about sanding tapes with stearate?

26/05/2021

Stearate is a chemical ingredient, in the form of a white powder, that is used as a dry lubricant. This zinc or calcium powder is applied, diluted in water as a soapy liquid, on some abrasive papers, thus providing a special coating layer with non-stick effects.

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