Rendering of AutoCAD model in Bryce 7.

This detail of the interior of Tower 107 shows the modern interlocking machine (basically a table with small levers) and the large illuminated panel display hung from the ceiling. I omitted the small levers to enable printing using Shapeways' Strong & Flexible nylon plastic. Although Frosted Ultra Detail would have allowed for modeling the levers, that plastic is susceptible to deformation above 118°F, which is easily achievable while the model is stored here in Texas. The basic interior is common to both Tower 106 and 107 kits.