Model building is the process of creating a physical or digital representation of an object or system. This practice is essential in various fields, including architecture, engineering, and film, where it helps visualize concepts and test ideas before full-scale production. Models can range from simple sketches to complex 3D printed structures, allowing designers to explore different possibilities and refine their work. In engineering, model building often involves creating prototypes to evaluate functionality and performance. These prototypes can be tested and modified, ensuring that the final product meets the desired specifications. By using models, creators can save time and resources while enhancing creativity and innovation.