In this volume experts from university and industry are presenting new technologies for solving industrial problems as well as important and practicable impulses for new research.The following topics are treated:- solid modelling- geometry processing- feature modelling- product modelling- surfaces over arbitrary topologies- blending methods- scattered data algorithms- smooting and fairing algorithms- NURBS21 articles are giving a state-of-the-art survey of the relevant problems and issues in the rapidly growing area of geometric modelling.