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Today the methods of numerical simulation of sheet metal forming offer a great diversity of possibilities for optimization in product development and in process design. However, the results from simulation are only available as virtual models. Because there are any forming tools available during the early stages of product development, physical models that could serve to represent the virtual results are therefore lacking. Physical 3D-models can be created using 3D-printing and serve as an illustration and present a better understanding of the simulation results. In this way, the results from the simulation can be made more “comprehensible” within a development team. This paper presents the possibilities of 3D-colour printing with particular consideration of the requirements regarding the implementation of sheet metal forming simulation. Using concrete examples of sheet metal forming, the manufacturing of 3D colour models will be expounded upon on the basis of simulation results.
In recent years simple CAD systems have entered the market, which are offered as freeware or open source projects. These systems prove to be a key technology especially for the further expansion of 3D printing, because a 3D model of the object to be printed is a prerequisite for the use of a 3D printer. Therefore, this contribution reviews several common simple CAD systems. Thus technical and economic criteria are evaluated. It is also demonstrated how the models designed in this manner can be used in 3D printing. A case study shows the possibilities and limitations to be expected when using simple CAD systems.