This script provides functionality to calculate the volume and surface area of 3D models stored in the STL file format, as well as estimate the weight of the model based on the selected material. It ...

After the "res" folder shows up, expand it to res > dx9 > model > ship > [whatever you want ... All that's left is to export it as a .stl and you can do that by going to File > Export > Stl (.stl), ...

Some time ago, [Trammell Hudson] took a shot at creating a tool that unfolds 3D models in STL format and outputs ... but is not free and is Windows only. There is also a Blender extension ...