You simply select your profiles (which can be closed shapes or open edges), click the command, and Curviloft automatically stitches them together. The power of this tool lies in its ability to handle a series of cross-sections. For example, if you are designing a custom vase, you can draw the bottom profile, several intermediate cross-sections, and the top rim. Curviloft will connect them seamlessly to generate the vase's body in a single click.

Curviloft (specifically the stable 1.8a build for SketchUp 2018 and the newer 2.0a builds) is the definitive antidote to SketchUp’s "boxy" geometry limitations. By mastering the three modes—Spline, Path, and Skinning—you transform the software from a simple push-pull tool into a full-fledged organic modeling powerhouse.

Let's walk through a classic Curviloft exercise to solidify the concepts. We'll use the tool to create a smooth transitional surface.

is a game-changing script developed by legendary community creator Fredo6 , designed to solve one of Trimble SketchUp's biggest limitations: creating organic, curved, and non-planar surfaces. While SketchUp excels at hard-line geometry like walls, boxes, and roofs, modeling textiles, ergonomic furniture, flowing terrain, or complex architecture can feel impossible without external help.

Navigate to the Sketchucation Plugin Store and download both Curviloft and LibFredo6. Open SketchUp, go to .

: Joins separate, non-intersecting contours (open or closed) using smooth splines. For example, you can transition a hexagon into a circle by selecting both shapes and letting the tool bridge the gap with a smooth mesh .

Creating complex, organic, or curvalinear shapes in SketchUp has historically been challenging, often requiring tedious manual modeling or expensive CAD alternatives. However, —a legendary plugin developed by Fredo6 —revolutionized organic modeling within the software.

If you used CurviLoft ten years ago, you remember the slow processing and occasional crashes. changes the game completely. Here is what the version number signifies:

This tool creates a surface that connects a series of profiles or splines.

: Creates a smooth surface across a series of separate contours or frames. It automatically generates intermediate edges to "skin" the space between lines.

To use this command, you begin with a three-dimensional "cage" or framework of edges (i.e., a wireframe). This could be a series of intersecting lines or a complex mesh structure. Curviloft automatically analyzes this framework and applies a smooth skin over the top, instantly creating a solid 3D surface. This is incredibly efficient for modeling things like custom car bodies, sculptural furniture, or terrain features.

Ensure all curves are pointing in the same direction to avoid twisted or flipped surfaces.