Abstract: To provide an art that can perform masking more easily than the prior art, irrespective of a shape of a workpiece. A powder coating system that attaches powder to a workpiece includes a support tool that supports the workpiece, a robot arm which includes the support tool fixed thereto and is movable three-dimensionally, and a removing device that restrains adhesion of powder to a region not needing powder of the workpiece fixed to the robot arm, or removes powder adhering to a powder adhering region, by at least either one of ejection or suction.

Abstract: To provide an art that can perform masking more easily than in the prior art. A support tool that is used in a powder coating system that electrostatically attaches powder to a workpiece, and supports the workpiece, wherein in the support tool, a region that is in contact with a part of a region not needing powder in the workpiece is formed of an insulator, and restrains adhesion of the powder to the part of the region not needing powder in the workpiece.