[HH] 3D printing with concrete

[Tom Metro]

Jack Coats wrote:
> Tom Metro wrote:
>> Not hard to imagine a printer that uses concrete as its medium to
>> "print" buildings.
> 
> http://www.theregister.co.uk/2008/09/01/concrete_building_printers/

Cool...from 2008...

  And there's no need for boring old boxy shapes, either. The equipment
  can happily create domes, vaults or any other shape that can be drawn
  in CAD software and support its own weight - at no added expense.

Spanning gaps with wet concrete is the part I wasn't sure about. The
video: http://youtu.be/-yv-IWdSdns  shows that they place prefabricated
beams over any openings.

  ...it will be possible for an automated setup to erect a
  2,000-square-foot, two storey house in 24 hours for about one-fifth of
  what such a project would normally cost.

  ...NASA is interested in using their gear for building bases on the
  Moon or Mars, without astronauts having to loosen their spacesuit
  trousers and heave hods of bricks about.

Ah, Newt will be pleased. :-)


Thanks for the links.

 -Tom