Despite the presence of high-tech CAD/CAM/CAE-systems, the problem of exchanging engineering data, primarily the structural elements of models, remains at this time not fully resolved. Both open data formats, such as STEP, IGES, etc., and polygonal STL formats, etc., do not solve the problem. Of course, these problems increase as the complexity of product models grows, but they also exist when using 3D prototyping technologies.
