Surface modeling is a technique used in computer-aided design (CAD) to create a 3D representation of an object. Unlike solid modeling, which defines the volume of an object, surface modeling focuses on the outer skin or surface. This method is particularly useful for designing complex shapes, such as those found in automotive and aerospace industries, where aesthetics and aerodynamics are crucial. In surface modeling, designers manipulate curves and surfaces to achieve the desired form. Tools like NURBS (Non-Uniform Rational B-Splines) allow for precise control over the shape and smoothness of surfaces. This approach is essential for creating detailed and visually appealing products, from consumer electronics to industrial machinery.