It seems you are asking about — likely a reference to the Curviloft extension (by Chris Fullmer) for SketchUp , possibly in the context of version 18 (e.g., SketchUp 2018 or a release around that period).
This is the bread and butter. You select multiple profile curves (circles, rectangles, custom splines) in sequence, and CurviLoft creates a skin that flows through all of them. curviloft 18
If you design consumer products, creating a mouse or a toothbrush handle is painful with native tools. Draw the profile at the base, the profile at the grip, and the profile at the tip. CurviLoft 18 generates the ergonomic volume instantly. It seems you are asking about — likely
: Functions similarly to SketchUp’s "Follow Me" tool but with significantly more control. It allows you to loft shapes along a rail, supporting multiple intermediate profiles to vary the shape (e.g., transition from a square to a circle). If you design consumer products, creating a mouse