Draw a square on the ground floor. Draw a circle on the 10th floor. Draw a twisted pentagon on the 20th floor. Space them vertically by 10 meters. Select all three shapes and run Loft between Sections. Set it to "Cubic" and "Twist Correction: Auto." Curviloft will create a stunning, twisting skyscraper that morphs from square to circle to pentagon.
Curviloft is a free plugin developed by Fredo6 designed to create complex organic surfaces in SketchUp. It bridges the gap between SketchUp’s native linear geometry and the need for smooth, curvaceous forms. It is widely considered an essential tool for architects, furniture designers, and landscape architects due to its ability to generate Loft and Skin configurations with high precision and control.
❌ Requires LibFredo6 – Not a true standalone plugin; you must install another framework. (Minor issue – installation is straightforward).
❌ No real NURBS – Curviloft outputs triangles and quads (polygons), not mathematical surfaces. For precise CAD work (e.g., CNC with tight tolerances), you may need to export as STEP via other workflows.
❌ Complex network lofts can be tricky – The order of curve selection matters; beginners sometimes get “gutted” or twisted results.
❌ Older UI – It has not seen a modern redesign; it looks like a plugin from 2015.
❌ No dynamic updating – If you move an original curve, the loft does not auto‑update. You must re‑run the tool.
Summary: Curviloft turns SketchUp into a surface-modeling powerhouse. Master the three core tools (Loft by Spline, Loft along Path, Skinning) and you can create anything from organic furniture to architectural shells.
Would you like a specific example (e.g., making a spiral staircase surface or a terrain mesh)? curviloft plugin sketchup
is an essential organic modeling extension for developed by Fredo6. It bridges the gap between SketchUp's native tools and complex surface modeling by generating skins and lofts from contours. As of early 2026, it remains a "must-have" for architects and designers dealing with non-planar faces and flowy geometry. Core Functionality
The plugin provides three primary methods for creating geometry: Loft by Spline
: Joins separate contours or profiles using smooth splines to create a continuous curved surface. Loft Along Path
: Generates a surface by sweeping one or two profiles along a user-defined curve or rail. Draw a square on the ground floor
: Creates a face or "skin" by connecting three or four bordering contours, perfect for complex roofs or tensile structures. Pros & Cons Curviloft for Sketchup – 2 minute Tutorial Curviloft for Sketchup – 2 minute Tutorial Sketchup Style Using Curviloft #sketchup
What is Curviloft? Curviloft is a popular SketchUp plugin that allows users to create complex, smooth curves and surfaces from simple shapes and lines. It's commonly used for designing architectural models, furniture, and other organic shapes.
Installing Curviloft
Basic Steps to Use Curviloft
Tips and Variations
Common Applications
By following these steps and experimenting with the Curviloft plugin, you can create smooth, complex curves and surfaces in SketchUp to enhance your 3D modeling projects.
This is the most intuitive tool. You provide a Path (a single line, curve, or polyline) and a series of Profiles (shapes perpendicular to the path). Curviloft is a free plugin developed by Fredo6