Less labor-intensive tools are more common now: a microplane or fine grater can be used to grind small amounts; a coffee grinder is useful for larger amounts.
The fine graters are also sometimes sold as a wooden board covered with shark skin, which has many tiny teeth (dermal denticles) and give it a feel similar to sandpaper.
Traditionally, these graters were tin-coated copper plates with many small spikes gouged out of the metal, but no actual perforations through the metal.
