What does solid modeling provide in 3D CAD?

Solid modeling in 3D CAD is fundamental because it offers a complete representation of an object’s volume. This comprehensive approach allows for the creation of a fully defined three-dimensional shape that includes not only the external surfaces but also the internal features and geometry. With solid modeling, designers can visualize how components will fit together, assess material properties, and analyze the object's physical attributes, such as mass and volume, which are crucial for engineering analysis and manufacturing processes. This level of detail enables effective simulations, modifications, and has applications in various engineering disciplines, ensuring that the model accurately reflects real-world objects.