Curviloft 18a ((free))

The 18a version specifically offers a "no-bloat" experience—fast loading, predictable results, and a toolbar that doesn't overwhelm new users. While the developer has moved on to bigger suites, the legacy of Curviloft 18a persists in the archives of thousands of architectural firms, game asset designers, and woodworkers.

Ready to break free from right angles? Install Curviloft 18a today and start drawing in curves. curviloft 18a

Select all three arcs. Click the Curviloft 18a icon (the rainbow-colored spline). Choose "Loft by Spline." Install Curviloft 18a today and start drawing in curves

The term refers to a specific, widely circulated version of this extension. While later updates (such as versions 1.8, 1.8b, and the newer CLF Essencials) exist, the 18a build is renowned among power users for its stability, specific feature set, and compatibility with older SketchUp versions (from 2015 to 2019). It acts as a bridge between basic push-pull modeling and advanced NURBS-like surface generation. Choose "Loft by Spline

Open SketchUp 2018 or 2019 (optimal compatibility). Draw a 10m x 10m square. Delete the face so you only have the four edges.