Diehl, HolgerMüller, FranzLindemann, UdoJoaquim Armando Pires Jorge and Eric Galin and John F. Hughes2014-01-272014-01-2720043-905673-16-91812-3503https://doi.org/10.2312/SBM/SBM04/137-142As we try to develop new 3D-Sketching devices we come across the problem of how to transfer 3D-Sketches into exact product models to gain an integrated design system. There are some promising approaches for the retrieving of 3D-geometries out of 2D-Sketches, but nearly none supports the concretization of 3D-Sketches. We are developing an intelligent assistant that supports the designer in the task of concretization. Our higher level goal is a system that uses a cad-kernel and supports the designer from the early stages of sketching up to the modelling of exact product representations.