This a somewhat speculative question; I would like to know whether it is feasible to additively manufacture large (>100m) metal objects - from for example aluminum alloys - in a space environment.
Methods could include 3d-printing or hot/cold spray techniques, or perhaps a fine spray of molten metal onto a thin sheet.
Simple shapes like spheres, cylinders, plates, beams are of interest.
There is some existing work, e.g. https://www.nasa.gov/content/spiderfab, but nothing I can find focuses on manufacture of large simple objects using additive techniques.