To make your sharpening job easier, try Norton Sharpening Stone Oil. Specially formulated for all types of metal. Norton sharpening stone oil is a natural, highly refined light mineral oil. It is a pharmacopia grade oil so it is safe for use on kitchen tools. Mineral oil lubrication is recommended for all Norton oil stones. Oil acts as an effective lubricant during the sharpening process to float away metal and abrasive dust that would otherwise clog up the stone and ultimately render it useless.