BlocksCAD

In BlocksCAD you build a 3D body from a program: you snap together visual blocks for shapes, translations, rotations, loops and variables, and the tool assembles them into a CSG solid much like OpenSCAD. The result is a parametric model where changing one dimension updates the whole body, and it can be exported to STL for printing. It suits schools and beginning students learning programming, geometry and design together. Limitation: for complex bodies writing code in OpenSCAD itself is easier, and an internet connection is required.