Large scale 3D printing

[Worldtree]

Here's a more extensive article on the subject,
http://www.esa.int/Our_Activities/Techno...D_printing

though we need to remember that 3d printing is one of many manufacturing processes in space, and traditional building methods, combined with assembly line manufacturing can be just as or more effective for certain applications
http://todaysmachiningworld.com/magazine...you-think/
http://www.nss.org/settlement/manufactur...ring03.htm

This project should give a few ideas to the possibilities for printing houses with sand
http://www.digital-grotesque.com/
http://www.popsci.com/technology/article...r-jaw-drop

and this one (though it hasn't been printed at scale yet)
http://www.softkilldesign.berta.me/

I'm not sure that 3d printing will pan out for printing certain materials or achieving certain tolerances, particularly with metal in asteroids.
http://www.businessinsider.com/deep-spac...ans-2013-1

Maximalism is happening!
http://www.orionsarm.com/xcms.php?r=oaeg...ae8736848c