Which feature in Inventor is used to create complex shapes from multiple sketches?

The Loft feature is specifically designed to create complex shapes by transitioning between two or more sketches. This capability allows users to connect different profiles in a smooth manner, which is particularly useful for creating forms that cannot be easily achieved using standard features. For instance, when designing a part that requires varying cross-sections or a specific aerodynamic shape, Loft enables the combination of these sketches into a single 3D body, thereby offering high flexibility and creativity in design.

Other features, such as Sweep, Extrude, and Revolve, each have their specialized applications but are typically used for more straightforward modifications—like extending a sketch along a path, removing or adding material in a uniform direction, or spinning a sketch around an axis. These methods are limited to simpler geometric transformations rather than the intricate connections possible with the Loft feature. Thus, when the goal is to generate complex shapes from multiple sketches, Loft is the go-to tool in Autodesk Inventor.