A thicknesser, also known as a thickness planer, is a power tool used to create a flat, uniform surface on a piece of lumber. It operates by feeding a board across a rotating cutterhead, removing thin shavings to achieve the desired thickness. This process is crucial for preparing wood for furniture making, cabinetry, and other woodworking projects where precise dimensions and smooth surfaces are essential. For example, a craftsman might use this tool to smooth a rough-sawn board for a tabletop or to ensure consistent thickness across multiple pieces of wood for a drawer front.
The ability to precisely control wood thickness is fundamental to successful joinery and ensures consistent results in project construction. Historically, achieving such precision required laborious hand-planing techniques. The advent of powered planers revolutionized woodworking, significantly increasing efficiency and allowing for greater precision and repeatability. This contributed to both the increased productivity of professional woodworkers and the accessibility of fine woodworking to hobbyists.