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This module acts as a digital fabric stretcher. When provided with a closed loop of three or four boundary curves, Curviloft calculates a clean, contiguous mesh skin over the frame, bridging gaps that would otherwise require painstaking manual triangulation. System Dependencies and Licensing

Curviloft RBZ is a software add-on designed for Rhino, a popular 3D modeling software used in various industries, including architecture, product design, and engineering. Developed by Peter Steinfeld, Curviloft RBZ is a robust tool that enables users to create complex curves and surfaces with ease, speed, and precision. The software is widely used by designers, architects, and engineers to generate smooth, flowing curves and surfaces that would be challenging or impossible to create using traditional modeling techniques.

If you’ve spent any significant time modeling in SketchUp, you’ve likely hit "the wall"—that moment where the native tools simply can’t handle complex, organic curves. Whether you’re trying to design a streamlined car body, a tensile fabric roof, or an ergonomic furniture piece, SketchUp’s default toolset often falls short.

Curviloft, developed by French designer Chris Fullmer (and later updated by the SketchUp community), is a suite of lofting tools. "Lofting" is the process of creating a smooth surface between two or more profile curves. In native SketchUp, creating a smooth curved roof or a boat hull is incredibly tedious, often requiring the Sandbox Tools or painstaking manual manipulation of individual faces.

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Keep your line work clean, manage your vertex alignment in the preview screen, and ensure your LibFredo6 framework is kept up to date. With these practices, Curviloft will quickly become one of the most powerful utilities in your 3D design arsenal.

Enter , a legendary script created by master plugin developer Fredo6. Running on the LibFredo6 shared library framework, Curviloft transforms SketchUp into a powerful lofting engine. It allows designers to generate surfaces from arbitrary networks of contours.

A context-sensitive menu will appear at the top of your viewport. Here, you can adjust the vertex matching, increase segment density for a smoother curve, or change the interpolation style from straight lines to a smooth spline.

┌────────────────────────────────────────────────────────┐ │ CURVILOFT TOOLSET │ ├───────────────────┬───────────────────┬────────────────┤ │ Loft by Spline │ Loft Along Path │ Skinning │ │ (Connects multi- │ (Extrudes shapes │ (Creates mesh │ │ ple contours) │ along a rail) │ inside frames) │ └───────────────────┴───────────────────┴────────────────┘ 1. Loft by Spline

“That it leaves a mark. A ‘rbz’ footprint in every surface you ever build after. So the thing can always find its way back.”

He leaned over, face pale under the neon strip lights. “Your next three original curves. Not copies. Originals. The RBZ version… it eats your source geometry. Replaces your master curves with ghosts. You can’t edit them after. You can’t reference them again. And some people say—” He stopped.

The plugin is broken down into three main operational modes: