GRINDING WHEEL and ABRASIVES BASICSDiamond wheel only on carbides and CBN only on steels? . Grey and brown grit are the workhorse grits used in bench grinding and production grinding.grinding stone grey,Choosing The Right Grinding Wheel : Modern Machine ShopDec 15, 2000 . Silicon carbide is an abrasive used for grinding gray iron, chilled iron, brass, soft bronze and aluminum, as well as stone, rubber and other.
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