Which tool profiles edges and cuts grooves in wood using router bits?

• A. Pneumatic Nipper
• B. Rubber Mallet
• C. Scissors
• D. Plunge Router

Answer: (D)

A plunge router is a woodworking tool that profiles edges and cuts grooves in wood using router bits. It spins a cutting bit at high speed and, importantly, lets you lower the bit into the material from above (plunging) to start cuts precisely where you need. That depth control enables you to create edge profiles like rounds, chamfers, and decorative edges, as well as grooves, dados, and mortises along the workpiece. Because you can set the exact starting depth and follow a cut path, it’s ideal for detailed edge work and grooving tasks.

The other tools listed don’t perform this function. They’re used for different tasks (cutting fasteners or shaping materials in other ways) and lack the rotary cutting action and plunge-depth capability needed to profile edges or cut grooves with router bits.