What is the primary purpose of using a Shell feature in modeling?

The primary purpose of using a Shell feature in modeling is to hollow out a solid part, creating walls of a specified thickness. This feature enables designers to reduce material usage and weight while maintaining strength and structural integrity. When you apply the Shell feature, it removes the interior volume of the solid while leaving a shell with a defined wall thickness, which is particularly useful in applications where materials need to be efficient or where weight reduction is critical.

In industrial design, architectural modeling, or product development, this can facilitate the creation of objects like containers, casings, or enclosures that require a lightweight yet durable construction. The ability to specify wall thickness ensures the final model meets necessary performance criteria while also helping to maintain a consistent aesthetic appearance.