A thickness planer (also known in the UK and Australia as a thicknesser or in North America as a planer) is a woodworking machine to trim boards to a consistent thickness throughout their length and flat on both surfaces.
Moreover, why would you use a planer?
Woodworking jointers and planers are used to mill wood so they can be used to build furniture and other projects to correct dimensions. If your workshop doesn't have a jointer to square up an edge or your wood piece is too large to fit through, you can use your planer to flatten both pieces of wood.
What is the difference between a planer and a jointer?
Every tool has its purpose, and when it comes to woodworking, the jointer and planer are two very distinct tools. A jointer is used to create smooth, flat surfaces along the four edges of a piece of wood. A planer cuts wood into the desired thickness, while creating perfectly parallel surfaces.
What is planing wood?
A hand plane is a tool for shaping wood using muscle power to force the cutting blade over the wood surface. Generally all planes are used to flatten, reduce the thickness of, and impart a smooth surface to a rough piece of lumber or timber.