A jointer or in some setups

A jointer or in some configurations, a jointer-planer (likewise recognized in the UK and also Australia as a planer or surface planer, and sometimes also as a buzzer or flat top) is a woodworking machine made use of to produce a level surface area along a board's size. As a jointer, the machine operates the slim side of boards, preparing them for usage as butt joints or gluing into panels. A planer-jointer setup has the width that enables smoothing ('surface planing') and leveling the faces (widths) of boards tiny enough to fit the tables.

The jointer obtains its name from its key feature of producing level edges on boards before joining them edge-to-edge to generate broader boards. Making hand tool kit of this term most likely emerges from the name of a sort of hand airplane, the jointer plane, which is also used mainly for this purpose.