After edge-banding the Sword Brush® cleans panel edgings extremely effectively. To clean both edges of a panel simultaneously, a Sword Brush® is mounted on the conveyor, in keeping with the guide rail, in a vertical position and perpendicular to the direction of transport. A second Sword Brush® is installed, parallel to the first brush, on the opposite side of the conveyor. The Sword Brush® can adjusted either manually or electrically to differing panel widths by means of an adjustment unit.