OUC, I thought that was part of the charm, it has texture, although I think you will have to drill studs into the walls inside to run cables and lines and pies, then finish. But I could live with the outside, paint it brown and think they are really small logs...

I think it's part of the aesthetics, wouldn't take 5 minutes to have a guy with a trowel smooth the sides if desired.

Keep in mind the poverty these people live in.. when I was in Ethiopia on a UN relief mission for Kigali, Rwanda during the ethnic cleansing/genocide (US Air Force), we were backing up the C-5 we flew in on into a parking space on the Addis Ababa, Ethiopia airport tarmac. (Yes, we can put a C-5 in reverse and back it up without a Yuke... just takes a hell of a lot of fuel - probably more than the last 1000 miles of flying did). We probably weighed around 850,000 lbs at the time, so we were giving the thrust reversers (everything), plus doing a sharp turn.

There were some huts of some kind along side the taxiway.. we didn't really pay any attention to them, corrugated metal strapped on some 4x4's.. kind of looked like 2-3 stall out-houses for the airport workers we assumed - well... T/R winds at "100s of miles an hour" will certainly blow such structures over - and we did. Then out came the people.. and the children... About 10 living in each one of them actually. They were indeed for the workers, but not toilets, they were the houses for the families... I would say each one was 6 or 8 x 10 feet at the most - living next to an active taxiway servicing Lufthanse primarily with a daily jumbo jet commercial schedule.

Obviously we felt horrible when we realized what we did, but the only compensation they wanted was the lumber from our pallets we hauled the food there on - you see, the pallet wood was way better than their available replacement materials - so they went to town with some tools we gave them building some more sturdy structures that won't blow over when a jet taxis by.

I have a great photo of some kids playing marbles on the taxiway underneath the wing of a 757 as it taxied by - kids were ducking down as the GE engine rumbled over their heads.

Trust me... this is quite an improvement for the third world.

You can print it much more smoothly, but it will cost a lot more and take a lot more time. Don't hesitate to ask me about much more precise 3D printing.

I kinda like it the way it looks, OUC.
Cinder blocks don't come out smooth either, unless you cover them up with something that drives up the labor cost.
I'd be more interested in whether this method can easily include super insulation that would pay for the entire structure in a relatively short period.

I would have to add that the texture is most likely part of their R&D process. The concrete flows out under extruded pressure and therefore may seek pressure equilibrium as it lays, thus arriving at the shape.

If they're interested in smoothing it over, they'll figure it out. Perhaps some sort of shaping components immediately after the extrusion head.

I have a feeling they may have gone down that path and found two major advantages to that textured approach:
1) Less cost to build the house: Just a spray head and no complicated shaping equipment to maintain.
2) The acoustics inside such a house would have more echo if everything were smooth. With the present log-like appearance, the interior is probably quieter with less echo.

I like the idea. My biggest concern would lie in the necessity for a perfectly stable exterior to support the 3D printer hardware. 24 hours to build the house is fantastic, but what would happen if the ground were soft (squishy) or unstable (sandy soil)?

I have a feeling they're well on their way to settling those matters too.

Wouldn't want anything to interfere with the profitable and happy building industry that has managed to avoid any significant advancement in 100 years. If there was a cheaper way to build it could reduce bankster profits and lower property taxes.

True enough- in the USA concrete structures would have to include rebar in carefully regulated ways. Prefab panels made in a factory seems to me to be more practical. Especially since housing doesnt last that long, and probably doesnt need to given the collapse of civilization thats coming.

Who knows that voodoo like you do, voodoo...59

(don't mind me, just feelin silly today...)

One thing I have never understood is the design of houses in the midwest. The dome home design seems tailor made for barns and houses, with steel shutters for entrances and windows, and let the tornado skip over it. I told my wife that was what I would build, but she says nope, west of the Cascades is it.

I agree. Also, prefab panels with elec and piping already installed would work better I think.

An article on the topic said up to 800sq ft.

Nice idea, set up the big ol 3d printer and just make it and keep crawling, except they would just drive Mad Max looking trucks into it and knock holes in it.

I don't know, but I will see if there is a better article somewhere's...

Our rich masters from both parties after they unite and call themselves the One World party....