First NASA certified 3d printer is planed to go to ISS in 2014 aboard the SpaceX Falcon 9 rocket. 3d printer was developed by Made In Space. You should read their company About page:
http://www.madeinspace.us/about-made-in-space
Here is the related TED talk:
3d printing will defeat Earths gravity.
Made In Space Company talk:
All the SF films from my childhood are turning into reality.
http://www.madeinspace.us/about-made-in-space
“The future of space exploration will change forever when everything we need for space is built in space. In this future, parts, habitats and structures are not launched and assembled, but instead 3D-printed, layer-by-layer in outer space with additive manufacturing.” – CEO, Aaron Kemmer
Here is the related TED talk:
3d printing will defeat Earths gravity.
Made In Space Company talk:
All the SF films from my childhood are turning into reality.