OpenSCAD
Open SourceOpenSCAD is a powerful, free software for creating solid 3D CAD objects using a descriptive programming language. It's not an interactive modeller but focuses on constructive solid geometry (CSG) and extrusion of 2D outlines.
Discover Mac OS X Softwares to Constructive Solid Geometry (CSG).
Combine basic geometric primitives using boolean operations like union, difference, and intersection.
OpenSCAD is a powerful, free software for creating solid 3D CAD objects using a descriptive programming language. It's not an interactive modeller but focuses on constructive solid geometry (CSG) and extrusion of 2D outlines.