Abstract: A method for manufacturing an add-on unit made up of car body sheets, the add-on unit having at least two overlapping sheets, in which one edge area of a first sheet is folded over an edge area of a second sheet. In order to enable direct assembly of the add-on unit into the body-in-white, after the folding process, the edge areas of the sheets are joined together in sections by applying heat on one side. In addition an add-on unit is manufactured using this method.

Abstract: The invention concerns a device for processing workpieces with height offset. It is the task of the invention to develop a device in which the flexibility of the positioning of a clamping tool is improved and the number of necessary application movements of the clamping tool is reduced. The invention is comprised therein, that a device for processing of workpieces with height offset, with a tool securable to a processing head, which in a work area is directed onto at least one workpiece, with a clamp head with a clamp tool for fixing the workpiece in a desired position in the environment of the work area, and with an actuating element for the clamping tool, the clamping tool (10) is adapted to the height (z) of the height offset.