is a specialized SketchUp extension developed by Fredo6 that simplifies the creation of organic, non-linear geometry by generating surfaces from existing curves or contours. It is widely considered an essential tool for architects and 3D modelers who need to create complex "skins" or smooth transitions between different shapes. Core Functionality
Skinning is the black belt level of Curviloft. It works with a "bed" of intersecting curves. Think of it as a weaving machine: you have vertical curves (longitudinal) and horizontal curves (transversal). Skinning creates a surface that follows the intersection of both sets.
Open SketchUp and navigate to . Click Install Extension at the bottom of the window. Select the LibFredo6.rbz file first and install it. Repeat the process for the Curviloft.rbz file. Restart SketchUp to initialize the toolbars.
As of 2025, SketchUp has introduced better native tools (like the Sandbox improvements and Push/Pull on TIN surfaces). How does Curviloft hold up?
The plugin will instantly analyze the borders and generate an optimized quad-mesh grid surface. Essential Tips for Clean Geometry curviloft plugin sketchup
Curviloft is, without hyperbole, the ultimate tool for taming complex curves in SketchUp, and it will undoubtedly pay for itself in saved time and unlocked creativity within your very first project.
Select a series of edges or curves that form a closed or open network. Curviloft generates a skin across them.
Note: As of recent updates, Fredo6 plugins require a small licensing fee after a free trial period. Licenses can be purchased directly through Sketchucation. Pro-Tips for Optimizing Your Workflow
Use the SketchUp Extension Manager ( Window > Extension Manager > Install Extension ) to install the .rbz files. is a specialized SketchUp extension developed by Fredo6
Before committing to the geometry, Curviloft shows you a "ghost" mesh. You can adjust the number of segments, interpolation, and smoothness on the fly.
Landscape architecture, site models, terrain from CAD files, and 3D printing organic landmasses.
Curviloft creates , not solids. To 3D print a lofted model:
: Connects separate, non-parallel contours (like a circle to a square) with smooth transition surfaces. It works with a "bed" of intersecting curves
To build a complete organic modeling arsenal, Curviloft works brilliantly with other key extensions:
Whether you are designing advanced tensile structures, organic furniture, or complex landscape topography, Curviloft bridges the gap between SketchUp’s rigid geometry and fluid, parametric design. What is the Curviloft Plugin for SketchUp?
To use Curviloft, you must install two separate components from the SketchUp Extension Warehouse or Sketchucation: