OpenSCAD – 3D Printing CAD Software

OpenSCAD is a free software for creating solid 3D CAD models. Unlike Blender, it focuses on CAD aspects rather than artistic aspects in 3D modeling. It might be a good choice for you if you want to code your CAD models for it uses a programming language to create 3D objects. Therefore, it gives designer full control over the modeling process and enables designers to easily change any step in the modeling process. OpenCAD is available for Linux/UNIX, Windows and Mac OSX.