Gadrooning
A Godronierung (also Godron, throw out gor double folds) is an ornamental surfaces or edges ornament, for example, in the goldsmith's art, created an object in the form of a rounded, usually elongated hump ( hump Cup ). In contrast to the concave fluting the Godronierung is convex outward worked as metal objects than semi-circular driven outward rib pattern.
The execution of Godronierung usually happens in of the driving technique.