Such models require craftsmanship and a lot of time consuming manual work. A few years ago computers entered the design world. These programs are often very powerful in creating photo realistic images, having color, surface structure, shadows, and so on. The problem is that these images are still really flat, and lack a true 3D feeling.
Most designers still prefer physical models which are easier to understand.
You can move around them. This is where Touch-3D comes in, with its ability to unfold just about anything. The basic building blocks are three and four sided 3D polygons. Any number of vertexes can, at any time, be moved in any direction. Four drawing modes provide editing options for layers, polygons, mesh points, and individual vertexes.