But anyway . . .
...back to the 3D printer:
Granted, for the "laying of layers," the surface tension for a liquid would be fine and dandy. Now, the drying becomes the crucial step, particularly when constructing a tool or part that would undergo stress when in use, regardless of critical need. In a micro-G environ, would the printed object be packed dense enough for the task at hand, or would the molecular structure be too sparse for use (crumbly)? I still think the printer would need to be placed on a spinner, or just the drying platform, if only for the duration of drying.