VMT - Vase Mode Terrain is a series of wargaming and roleplaying terrain designed to be printed in spiral vase mode. No supports required, no infill required. Simply select Vase mode (or spirialize outer contour) and print!
This was designed with the information I gained printing the village houses.
The roof here was the shallowest angle I could get away with. Bear in mind I am continuing to use a 0.8mm nozzle. If you are having trouble obtaining these angles, I would advise increasing the size of your nozzle or printing at lower layer heights.
There may be some gaps in the print when you slice it, but mine printed just fine. I used a 0.8mm nozzle, printing at 0.16mm layer height.
This model took 10 hours to print in total, and uses six columns.