When the stone is used dry, it will produce an extremely sharp edge on your tools.
Silicon Carbide Stones are very fast cutting and whilst a thin clear oil is usually sufficient, cutting may be tempered by soaking the stone in hot petroleum jelly.
Alternatively, water can also be used with similar effect.
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Carbonundum Silicon Carbide Abrasive Combination Sharpening Stone for Sharpening Knife Scissors Chisel Blade