[IamConservative]

I assume they printed the negative and used it to make a mold for the castings?

[null and void]

I assume it was directly printed in metal.

[BwanaNdege]

It might have been laser sintered metal printing, but my guess is that they printed in plastic, perhaps PLA, then used the “Lost Wax” process for subsequent casting in metal.

There appear to be weld beads on the base & side tube.