The Meccano pieces were originally developed to illustrate the various methods of creating holes in digital 3D objects for an article which appeared in '3D COM' magazine. (it can be downloaded from the tutorial tab in the 3D section).A whole range of meccano components were modelled and using StrataCX5's shape technology are stored as discreet components which can be assembled just as you would assemble the real thing.There is an animation of the windmill building itself in the animation section.