A system and method for rendering a virtual model employs construction elements capable of identifying themselves that are assembled together to form a physical model. The frame includes a support plate assembly comprising a plate member defining a pivot aperture and a notch. A safety vent is formed on a side surface of the prismatic can, and includes a weakened portion. In order to prevent notch stress in the segment struts, the width thereof increases from midsection in the direction of the transitions, wherein the segment struts are curved in a wave-like manner.