GeneMoore September 10, 2018 12:15 PM ok I do concrete and carpentry and this "system" is a rip-off. I can build it with 3 workers in 4 days for the walls and one for the roof using poured in place lightweight concrete. If the marines need 10 people working for 10 days they must be blind crippled and asleep, and definatley not worth having to build anything but big butts. this whole thing is a mechanized joke and a total rip-off. DavidIngram September 10, 2018 12:46 PM Who is going to transport, operate, and maintain this equipment. Add 3 trucks and 15 techs. toyhouse September 10, 2018 04:07 PM Reading the article, the key word in it is, "prototype",. Something military has always done. The military will give companies a chance, in the field, to see how something will perform under their specific needs and requirements. Not necessarily our's or the free market. I doubt there are many experts in the field of 3d structure printing just yet. It's new! But the potential for building life saving structures, (strong), in certain, harsh or dangerous environments, should be beyond obvious. Even in it's technical infancy, the advantages may outweigh current disadvantages. Obviously, the military thinks there's potential somewhere. This is new ground. One must think outside the box. Grunchy September 10, 2018 05:46 PM The shape of the walls is very unusual. Stay-in-place concrete form technology is probably better because it's much faster, also you can include rebar reinforcement (maybe this one has some kind of fibre in the cement mix?) Obviously it's technology-in-development since it shows at least 8 people in the photo, only one of whom seems to be doing something. exodous September 10, 2018 06:16 PM Not practical but if you let the Military pay for advancements in structure printing it will benefit everyone. It is insane that this technology isn't being used more often and the reason is no one is putting money into r&d. In comes the US Military, it having the largest budget for r&d than any other organization on the planet, and things will move forward. Yeah, for military purposes this is money wasted but might as well use some of that money to advance printing buildings. This could also be re-used in the space program, send robots to Mars to print a base for future astronauts. Dan Marsh September 10, 2018 07:06 PM Those walls could be built in less time by a couple of blocklayers (humans) with a far better end result. Presumably the walls have to be wavy shaped so that they don't collapse. The system is a joke, but you might get a some beer money for that machine at the scarp yard! Trylon September 10, 2018 08:12 PM The wavy walls are in fact to increase lateral stiffness. Think of the difference between flat sheets of paper and corrugated cardboard. You can make strong, stiff boxes out of one, while the other would collapse under any kind of load. Dan Lewis September 10, 2018 08:55 PM I like the idea. They could make the barracks any color, or even a camouflage non-pattern. It needs to be able to do the job even faster than it currently does. minivini September 10, 2018 09:51 PM To all you armchair quarterback “I can do it better” types: can you do it while combatting snipers, patrolling, guarding a perimeter, and actively engaging enemy combatants? Didn’t think so. Nobody cares if you can lay cinder blocks in rural Oklahoma. Deres September 11, 2018 04:48 AM I think they are wrong to use this type of huge 3D printer box. At this size, this should be done by a mecanized arm instead. Otherwise, you take a long time building your 3D-printer and moving it. And you will have issue at the seam between walls. They also do not talk about the floor that was probably done manually in concrete.