Free 30 000+ 3D models. Download without registration - Archive3D.net. Evanw.github.com/csg.js/ Source code: Documentation: Introduction Constructive Solid Geometry (CSG) is a modeling technique that uses Boolean operations like union and intersection to combine 3D solids.
Made by Evan Wallace This demo requires a decent graphics card and up-to-date drivers. If you can't run the demo, you can still see it on YouTube.