PLaSM (Programming Language of Solid Geometry) is a powerful library for 3D Design. This technology is sometimes also called Constructive Solid Geometry (CSG) and it is part of all modern CAD systems. One can use PLaSM in NCLab to create parts of machines, buildings, and much more. Try it yourself, it is very simple and extremely exciting! The tutorial videos are available through the link “Tutorials and Videos” on NCLab home page .