This is a free sample from my latest kickstarter project Kimondo:
https://www.kickstarter.com/projects/terrain4print/kimondo-city-of-the-f...
With these files, you can print the spiral hab block. They stack to any height and the stairs spiral around the building.
In the full version, you will find this model with interior, split into smaller parts for smaller printers, with walklways between different buildings.
