A method, control program, computer-readable data-carrier, controller, and milling device for milling a cover layer of metal sheets for removing a cladding layer from cladded sheets. The method includes providing a milling tool to rotate around a rotational axis, having at least one milling face extending essentially perpendicularly to the rotational axis and adapted to face the metal sheet to mill the cover layer. A fixture assembly is configured for fixing the metal sheet and defining a working plane with which at least flat sections of the metal sheet are supposed to be aligned, such that a surface normal of the flat section extends essentially perpendicularly to the working plane. The rotational axis is being tilted under at least one work angle with respect to the surface normal of the flat section during the milling process.

A method, control program, computer-readable data-carrier, controller, and milling device for milling a cover layer of metal sheets for removing a cladding layer from cladded sheets. The method includes providing a milling tool to rotate around a rotational axis, having at least one milling face extending essentially perpendicularly to the rotational axis and adapted to face the metal sheet to mill the cover layer. A fixture assembly is configured for fixing the metal sheet and defining a working plane with which at least flat sections of the metal sheet are supposed to be aligned, such that a surface normal of the flat section extends essentially perpendicularly to the working plane. The rotational axis is being tilted under at least one work angle with respect to the surface normal of the flat section during the milling process.