A planer is a woodworking tool used to flatten and smooth the surface of wood. It consists of a rotating cutter head with blades that remove material from the wood as it passes through. Planers can be handheld or stationary, and they come in a variety of sizes and types.
Planers are an essential tool for any woodworker, and they can be used to create a variety of projects, from simple boards to complex furniture. They are also used in the construction industry to plane lumber for framing and other purposes.