Chicago Skyline 3D Map

3D map of Chicago. The intent was to slice it into tiles for printing in sections - maps like this have been posted on social media sites but with no STLs and no workflow, so I wanted to offer both and maybe spark someone else to do a better job, but a hospital stay has me moving slowly for now. Here is the data I got done so far:

Google's 3D data is proprietary, and ripping geometry from Google Earth like this is sort of a hack. I've done it before and it works, but the tools only work on