A thickness planer, also known as a thicknesser in some regions, is a woodworking machine used to create boards of consistent thickness and smooth surfaces. It consists of a flat bed and rotating cylindrical cutters, typically arranged in a spiral pattern, that remove material from the surface of a wooden board as it passes through the machine. The thickness of the board can be adjusted by raising or lowering the bed or adjusting the height of the cutters.Thickness planers are essential tools in woodworking shops and manufacturing facilities, allowing woodworkers to precisely control the thickness of boards for various projects such as furniture making, cabinetry, and flooring. They are particularly useful for producing uniform boards from rough-sawn lumber or for ensuring that multiple boards used in a project are of the same thickness.In addition to thicknessing, some planers also feature additional capabilities such as flattening, smoothing, and surfacing rough lumber. They can be used to remove imperfections and defects from the surface of the wood, resulting in a finished product that is flat, smooth, and uniform in thickness.