The book investigates the capabilities of the two software Computer Aided Industrial Design software (CAID) and Mechanical Computer Aided Design software (MCAD) on the modelling of artefacts which have got freeform geometry. In this modern world of competition products are not only designed considering the functionality but special considerations are given to its form/aesthetic which can bring a desire in the mind of consumer to own that product. It is used in Automobile Industry, FMCG and Aircraft Industry. Feature modelling is nowadays the predominant way of product modelling. The modelling facilities of feature modelling systems are quite diverse, but a major shortcoming in nearly all of them is that their shape domain is limited to use of primitive shapes. Because of strength, flow, aesthetic or other requirements, products often contain freeform surfaces.