“A study team from Made in Space and NASA demonstrated the first ever 3-D printer in space using relatively low-temperature plastic feedstock on the space station. To conclude the test phase, a ratchet wrench was printed using a design file transmitted from the ground to the printer.”
http://app.ecnmag.com/news/2015/02/space-station-3-d-printed-items-seedlings-return-belly-dragon
We tried about 4 different builds of that wrench and gave up because it wasn’t a paying job for our business. It would be nice if they’d give a little more info than the STL file, such as their slicing parameters.