Model building in engineering plays a crucial role in visualizing and testing design concepts before moving on to full-scale production. Models help engineers analyze the functionality, performance, and feasibility of a product or system in a cost-effective and efficient manner.

Prototyping is often the next step after model building in engineering. Prototypes are physical representations of a design that allow engineers to further test and refine the product. Model building helps in creating accurate prototypes that can be used for functional and user testing.

Some benefits of using model building in engineering include faster design iteration, reduced development costs, improved communication between team members, and the ability to identify and rectify design flaws early in the process. Models also help in showcasing concepts to clients and stakeholders.

Common types of models used in engineering include computer-aided design (CAD) models, physical models made from materials like clay or foam, virtual reality models, and mathematical models that simulate the behavior of a system. Each type of model serves a specific purpose in the design and testing process.