Which hand tool is used to smooth rough edges of wood?

The hand plane is specifically designed to smooth rough edges of wood. It works by shaving thin layers off the surface of the wood, resulting in a flat and even finish. This tool allows for precise adjustments to the thickness and texture of the workpiece, making it ideal for achieving a smooth surface that is ready for finishing or further woodworking processes. The hand plane is versatile in that it can be used on various types of wood and can help in preparing edges for joining or for aesthetic purposes.

Other tools, while useful in their own right, do not fulfill the smoothing role in the same way. A saw is primarily used for cutting wood to a desired length or shape. A chisel is utilized for carving or trimming wood rather than smoothing the surfaces. A hammer is generally employed for driving nails or assembling components, not for enhancing the finish of wood. Therefore, the hand plane stands out as the proper tool for smoothing edges.