Abstract: An apparatus for painting an edge of a workpiece that is moving in a travel direction generally parallel to the edge past a painting station has a support movable horizontally transversely of the direction in the station and an actuator connected to the support for displacing the support transversely of the direction. A generally tubular casing mounted on the support has a rear end and a front end and a front plate engaged over the front end of the casing is formed with a narrow nose in turn formed with a notch having a shape complementary to the workpiece edge. The front plate is releasably secured over the front end of the casing. A vacuum tank adjacent the station has a large-diameter flexible vacuum hose connected to the rear end of the casing for drawing in air through the nose at the notch.