Spline Tool

Use the Spline tool to sketch splines in 2D or to draw splines between points on objects in 3D. A spline is a continuously curved line, without sharp boundaries (that is, without vertices). Splines can become edges when you pull your sketch into 3D with the Pull tool. Sweeping along a spline in 3D lets you create smooth, curvy shapes.

The sketch grid must be visible in the workspace before you can draw.