3D printing in concrete
An evening pause: How things will be built and manufactured in the future, on Earth and in space, though in space they probably won’t use concrete.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Actually they might use concrete. McDonnel Douglas and the Shimizu corporation worked up some lunar base ideas ( http://www.shimz.co.jp/english/theme/dream/moonbase.html ), and did testing on a new concept to cast concrete made out of lunar soil in a vacume. Worked great and the Lunar soil made the best concrete they ever saw. [Course the moons pretty dry, but water is common in near Earth space.]
I wonder if you could use liquid metal? Say melt the highly pure nickle Iron of a asteroid, and pump it outto lay it up to form a station or colony platform.