What is a router used for?

• A. Hollows out an area in hard material such as wood.
• B. Polishes surfaces to a mirror finish.
• C. Measures the thickness of metal.
• D. Bends plastic into shapes.

Answer: (A)

A router is a wood-cutting tool that removes material with a spinning cutter to shape and hollow out wood. This makes it ideal for creating recessed areas, grooves, and edge profiles. The action described—hollows out an area in hard material like wood—fits perfectly because the router is precisely oriented to remove material where you want a cavity or channel, with depth controlled by your setup and bit choice. Other tools mentioned do different jobs: a polisher smooths and shines surfaces, a thickness-measuring tool checks how thick a piece is, and a plastic-bending tool reshapes plastic with heat.