“Click → extract edges → clean curves → model.”
Have you tried the plugin Vectorize for auto-tracing images? vectorize plugin rhino 2021
Simply put, vectorization is the process of converting pixel-based images (like JPEGs or PNGs) into mathematical paths (lines, curves, and polylines). “Click → extract edges → clean curves → model
The Vectorize command converts raster line art, logos, floor plans, or black-and-white images into editable Rhino curves. It works best with high-contrast images (black on white or vice versa). It works best with high-contrast images (black on
Complex images may take several seconds. Large images (over 5 MP) may slow down Rhino.
It became a "saint-like" tool for students, saving them from countless late nights. While some users initially found it tricky to install or use on specific color images, it quickly became a staple for those needing fast, reliable outlines for architectural diagrams and jewelry design. How to Use It
A unique advantage of (Version 7) is SubD modeling. Here is a pro tip: