The main file in exploring the potential uses of the 6" garden stable. There are hinges and conveyor segments, plane stabilizers, each accepting the fact that the wires are not straight, the dimensions vary by several millimeters, and all other limitations.
Not all resources and projects of The RON are "open source" or "free of cost". But OpenSCAD and BOSL2 are open source and free of cost, so the models created by them made available just the same. However, I am not even a competent scriptie or designer, so be sure you understand and accept that fact before using anything you find here.