Um, you can get 3D printing done in Aluminum. I know - I’ve order parts made that way for a project.
It was probably 3D laser sintering.......................
where can you get that made? I need something made in aluminum
-— Um, you can get 3D printing done in Aluminum. -—
Aluminum is the only plastic metal, so it has limited value in load bearing situations.
Metallurgy is an enormous science. I can’t imagine how a “printer” that simply deposits molten metal in layers could possibly reproduce the complex ways that steel and other metals are heat-treated, forged and work-hardened.