The priority program "Modelling of scaling effects on manufacturing processes", which was initiated and coordinated by Prof. Vollertsen, was funded by the German Research Foundation (DFG) in the years 2002 to 2009. After about seven year's intensive investigations, which were divided into 3 phases, this priority program was successfully ended with a closing-colloquium held on 11^th/12^th Feb. 2009 in Bonn.

The work within this program was featured by interdisciplinary cooperation between disciplines forming technology, cutting manufacturing, mechanic and materials science. The focus of the work was on the phenomena, which appear during scaling a manufacturing process according to the theory of similarity. The common problems during scientific works from different projects were handled in correspondingly research groups. The knowledge acquired in this priority program builds now an established fundament in developing and construction of novel processes.