This is how I imagine we will 3d print structures in space, in conjunction with this jpl's metal printing tech http://www.jpl.nasa.gov/news/news.php?release=201

This is how I imagine we will 3d print structures in space, in conjunction with this jpl's metal printing tech http://www.jpl.nasa.gov/news/news.php?release=2014-247 http://www.jpl.nasa.gov/news/news.php?release=2014-247