What might prevent metal “blowing” and other forms of shaping from working if gravity was not a factor? Let’s handwave-ignore the extremes of temperature as it relates to techniques and the present primitive space habitats and craft.
Is it possible to suspend a pool of molten metal, with a tube inside, spin while adding a gas to shape a container, and form more complex shapes through additional heat cycles in a repeatable process?
Ditto goes for most alloys. Glass-like properties aren’t typical, otherwise metal blowing would be a thing.
There might be alloys that can do this, but not the usual ones. Some of the low-melting ones can be gooey-seeming, off the top of my head.