In conclusion, SketchUp's surface tools offer a wide range of possibilities for creating and editing 3D surfaces. By mastering these tools, users can create complex 3D models with ease and precision. Whether you are an architect, product designer, or landscape designer, SketchUp's surface tools are an essential part of your toolkit.

It is a paid extension (currently $12 for a perpetual license), though it is often bundled with other Fredo6 tools like Curviloft and Joint PushPull for better value.

Specifically designed to maintain a "clean" arc even when crossing multiple segments of a curved face.

When you draw lines on a surface, they create harsh edges (creases). If you are making a car fender or a terrain hill, you don't want lines.