Through the use of various CAD and reverse engineering software, one could create accurate data for manufacturing, analyze how it will perform, and improve existing designs. CAD is used to create three-dimensional graphical representations of physical objects. In product and industrial design, CAD is used mainly for the creation of detailed 3D solid or surface models, or 2D vector-based drawings of physical components. However, CAD is also used throughout the engineering process from conceptual design and layout of products, through strength and dynamic analysis of assemblies, to the definition of manufacturing methods. This allows an engineer to analyze design variants, to find the optimal design for manufacturing while minimizing the use of physical prototypes.