Relative positioning is one of the most useful and powerful features in the BOSL2 library. In BOSL2 you can make an object a child of another object. When you do this, the child object is positioned ...
The acronym VNF stands for Vertices 'N' Faces. You have probably already come across the concept of vertices and faces when working with the OpenSCAD built-in module polyhedron(). A polyhedron() in it ...