What tool is specifically designed to smooth edges on a surface?

The tool designed specifically to smooth edges on a surface is the plane. A plane is a hand tool or power tool used primarily in woodworking to create flat surfaces and smooth edges. It operates by shaving off thin layers of material from the surface, allowing for precise control over the depth of cut, which results in a smooth and even finish.

While other tools have their specific functions—such as a sander, which is more focused on refining surfaces and removing imperfections, or a router, which is used for hollowing out or shaping edges and surfaces—they do not specialize solely in edge smoothing like a plane does. The chisel, although useful for shaping, is mainly for removing material more aggressively and would not achieve the same level of smoothness on edges as a plane would. The plane’s distinctive design, with its blade positioned for cutting along the grain of the wood, is what makes it particularly effective for achieving smooth, finished edges.