KOMPAS-3D The product modelling in KOMPAS-3D can be carried out by various methods, namely: down-top modelling (using finished components), top-down modelling (designing components in the context of a specific design), modelling based on a layout outline drawing (for example, on a kinematic diagram) or a combination of modelling methods. Such ideology provides obtaining easily modifiable associative models. The system has a powerful functional for the management of project including several thousand sub-assemblies, parts and standard products. It supports all the capabilities of three-dimensional solid-state modelling that have become a standard for medium-level CAD/CAM designs: * boolean operations on typical shape-generating elements; * creation of surfaces, * associative setting of elements parameters; * construction of auxiliary straight lines and planes, spatial curves (broken lines, splines, various spirals); * creation of structural elements, i.e. chamfers, fillets, holes, stiffness elements, thin-walled shells; * special possibilities facilitating the construction of foundry moulds, i.e. pattern draft, joint lines, cavities according to the part shape (including those with the setting of shrinkage); * functional for sheet material modelling – commands for creating of sheet body, bends, holes, louver, fillets, punching(stamping) and cuttings in sheet body, caps closing, and also for unwraping of obtained sheet body (including creating associative drawing of unwrapping), * creation of any shape-generating arrays and assembly components; * inserting standards products into the model from a library, generating user model libraries; * component modelling in the context of assembly, relative determination of parts comprising the assembly; * imposition of mating for assembly components (in doing so, a possibility of automatic imposition of mating considerably increases the rate of assembly creation); * detection of the interpenetration of parts; * special tools to simplify the work with large assemblies, * a possibility of flexible editing of parts and assemblies, including with characteristic points, * re-determination of the parameters of any element on any designing stage causing a re-construction of the whole model.