The invention relates to a device for machining a strip or plate-shaped metal workpiece, which comprises at least one conveying device which is provided with machining elements. The conveying device guides the machining elements at an angle and/or in a transversal manner in relation to the direction of advancement of the workpiece in the region of the workpiece which is to be machined in an at least approximately linear manner. The machining elements are embodied as abrasive paper and support elements are arranged between said abrasive paper.