By tjh1, Nov 16, 2018
One Man’s Journey To Build Portable Concrete 3D Printer Produces His First Tiny House:
https://hackaday.com/2016/06/28/one-mans-journey-to-build-portable-concrete-3d-printer-produces-its-first-tiny-house
Low-cost 3D-printed shelter being built from clay and straw: https://newatlas.com/wasp-clay-straw-home/44856