(PhysOrg.com) -- An Italian inventor, Enrico Dini, chairman of the company Monolite UK Ltd, has developed a huge three-dimensional printer called D-Shape that can print entire buildings out of sand and an inorganic binder. The printer works by spraying a thin layer of sand followed by a layer of magnesium-based binder from hundreds of nozzles on its underside. The glue turns the sand to solid stone, which is built up layer by layer from the bottom up to form a sculpture, or a sandstone building.
The D-shape printer can create a building four times faster than it could be built by conventional means, and reduces the cost to half or less. There is little waste, which is better for the environment, and it can easily “print” curved structures that are difficult and expensive to build by other means. Dini is proving the technology by creating a nine cubic meter pavilion for a roundabout in the town of Pontedera.
The printer can be moved along horizontal beams and four vertical columns, and the printer head is raised by only 5-10 mm for each new layer. The printer is driven by a computer running CAD software and prints at a resolution of 25 dpi (dots per inch). The completed material resembles marble, is stronger than concrete, and does not need iron reinforcing. The printing process can successfully create internal curves, partitions, ducting, and hollow columns.
Dini also has lunar plans for the D-shape, and is in discussions with La Scuola Normale Superiore, Norman Foster (a UK architecture firm), and Alta Space, as part of the Aurora program run by the European Space Agency (ESA), to build a modified D-Shape that could use lunar regolith (moon dust) to build a moon base. Dini will carry out trials in a vacuum chamber at Alta Space’s facility in Pisa to ensure the process is possible in a low-atmosphere environment such as the moon.
Dini said his ultimate dream is to complete Guidi's Sagrada Familia in Barcelona, which has been under construction since 1882 and which is not expected to be completed until 2026 at the earliest.
Explore further:
Printing of components with functional ink
More information:
D-shape: d-shape.com/

akademy
4 / 5 (1) Apr 19, 2010Anyone know how heavy this sand and glue material is? First thing you may have to "print" could be a crane to lift it off the printer...
mysticfree
4.5 / 5 (4) Apr 19, 2010zevkirsh
4 / 5 (1) Apr 19, 2010this is just the beginning.
z
Tombo
5 / 5 (1) Apr 19, 2010http://www.bluepr...uilding/
zevkirsh
1 / 5 (8) Apr 19, 2010Skeptic_Heretic
3.5 / 5 (2) Apr 19, 2010Because it's really that big a jump to use regolith instead of cement....
ThanderMAX
5 / 5 (1) Apr 19, 2010Due to Moons low gravity it will not be a problem
jj2009
3 / 5 (3) Apr 19, 2010fmfbrestel
5 / 5 (2) Apr 19, 2010Title is correct. Not a lot of specifics, but since most (all?) testing to date has been terrestrial, if you want ANY info terrestrial is what you get.
NotAsleep
5 / 5 (1) Apr 19, 2010jimbo92107
5 / 5 (1) Apr 19, 2010Coldstatic
5 / 5 (1) Apr 19, 2010Auxon
5 / 5 (1) Apr 19, 2010You could print large objects in place. Instead you raise the top layer, building up, rather than lowering it down.
billyswong
5 / 5 (1) Apr 19, 2010DaveGee
3.7 / 5 (3) Apr 19, 2010Yea... and besides that.... Have you seen the insane price HP demands for new printer cartridges!?!? On top of that, it seems like once you print 4 or 5 walls it complains about needing a fresh cartridge!
baudrunner
5 / 5 (1) Apr 19, 2010It is only natural to extend the idea to the colonization of other bodies in the solar system. In fact, it is an absolutely great way to go about it because it makes use of raw materials on the building site, allowing for more square feet per project.
Do not let this idea die!
PinkElephant
3.8 / 5 (5) Apr 19, 20101) Large variation between day vs. night surface temperatures (on the equator, the minimum is 100 K while the maximum is 390 K).
2) Radiation (including solar wind, and cosmic rays.)
3) Meteorites (including micrometeorites and space dust impacting at orbital velocities.)
4) Lack of atmosphere (so, need for hermetically sealed, pressurized dwellings.)
With these challenges in mind, I think constructing bases on the Moon's surface is a demented and deranged idea, suitable only for pulp science fiction.
Any real, livable, reliable, and practical Moon base would be subterranean: similar in concept to bomb shelters or subway stations on Earth.
otto1923
3 / 5 (3) Apr 19, 2010otto1923
5 / 5 (1) Apr 19, 2010GDM
5 / 5 (1) Apr 19, 2010fixer
5 / 5 (1) Apr 19, 2010But, it is a good idea for building in sites with poor access.
Fly in the printer and use local raw materials to build fireproof dwellings almost anywhere.
Yes
4 / 5 (1) Apr 19, 2010Will 1 or 2 dpi not be enough for printing buidings.
Printing the roof will always lead to round rooftops.
Yes
4 / 5 (1) Apr 19, 2010eddieo
Apr 19, 2010jsa09
5 / 5 (1) Apr 20, 2010Adding colour would be an improvement, you could have a normal three colour plus black and clear containers to add to the sand material.
GDM
not rated yet Apr 20, 2010antialias_physorg
5 / 5 (1) Apr 20, 2010Why would you? You only need color on the surface - not in the entire volume. It's much cheaper to use one material and then paint the surfaces you want to later on.
fixer
5 / 5 (1) Apr 20, 2010To save the expense of painting of course!
And, if you chip or damage it you can't see the mark.
Wish they could print car bodyshells like that, it would save me a fortune.
tubey
1 / 5 (6) Apr 20, 2010tubey
1.5 / 5 (6) Apr 20, 2010Caliban
1 / 5 (4) Apr 20, 2010Otherwise, we are faced with the elimination of literally millions of jobs, and therefore livelihoods, at least terrestrially, without _very_ controlled deployment.
Unless something happens to drastically reduce our population, then this seems like a very destructive and destabilizing technology if put into use on a widespread basis here on Earth.
antialias_physorg
5 / 5 (2) Apr 21, 2010This tech is one of the steps towards eliminating ALL work - a step we should take sooner rather than later.
otto1923
4.5 / 5 (2) Apr 21, 2010random
3 / 5 (2) Apr 21, 2010So true... This is all just one big scam to sell us more overpriced ink. I'm wise to their shenanigans.
GDM
not rated yet Apr 21, 2010otto1923
4 / 5 (1) Apr 21, 2010http://en.wikiped...d_cement
-Curing is a complex chemical process. There are different Types, and I suppose the researchers who proposed this have ideas on just how it could be done. Got any links?
Also for this?We will be using nukes in space. Treaties are made to be superceded. Why do you think we went to the trouble of making those 5000+ tons of weapons-grade fissionables for? Global suicide? Come on, that was just the excuse.
A borer can be launched as a self-contained unit requiring no additional materials which would need to be mined and refined onsite. Supposedly there are units which can fuse their own walls. These could be set to work tunneling into crater walls and create MUCH more sealed and protected space than surface construction could provide.
otto1923
5 / 5 (3) Apr 21, 2010GDM
not rated yet Apr 21, 2010otto1923
4 / 5 (1) Apr 21, 2010-You mustve gotten these pdfs online? Heres one:
http://ares.jsc.n...049.HTML
Or assembled and launched from orbit:
http://www.reacti...obs.html
GDM
not rated yet Apr 21, 2010It takes a couple of attempts to download the PDFs from the NASA technical reports server at http://ntrs.nasa....Ntx=mode matchall&Ntt=19930007712
otto1923
4 / 5 (1) Apr 22, 2010otto1923
5 / 5 (1) Apr 22, 2010They have this process:
http://www.mortar...oncrete/
-Ive also seen sprayed foam used-
Yes
5 / 5 (1) Apr 22, 2010antialias
4.2 / 5 (5) Apr 23, 2010Employment is not the defining character of being a human (a fact 99% of the world's population seems to have forgotten).
Caliban
4 / 5 (4) Apr 24, 2010Until we can find a way to un-invent "money"- it's a fact that 99% of the world's population depends, for their very survival, upon not forgetting.
otto1923
5 / 5 (1) Apr 24, 2010@Caliban
Welfare checks and food stamps are money. Pay me not to work and I will duly reinvest in the economy, by spending it. Software already does what I used to do. So I should be writing software to put more people out of work?
Husky
5 / 5 (4) Apr 24, 2010Zuls
not rated yet Apr 26, 2010Caliban
1 / 5 (1) Apr 26, 2010Not sure I understand your meaning. Explain, bitte.