[praptak]

Is there actual 3D printing of metals? Last time I checked there was a very difficult process of 3d printing resin-on-dust, then pre-baking the dust-resin form, then soaking it in molten metal. Also it wasn't aluminium.

[TheGallopedHigh]

Yes there is 3D printing of metals. I’ve seen it predominantly in aerospace parts or rocketry

[megablast]

Did you read the article?? They printed a metal propeller for the boat.