A method is provided for corner contouring of flat glass substrates in a continuous feed-through process by a contouring tool. The method includes the steps of: synchronization of the movement of the contouring tool to the continuous feed-through movement of the flat glass substrate, contouring of a corner of the flat glass substrate, wherein a relative movement between the contouring tool and the flat glass substrate is performed so as to overlap the continuous feed-through movement.