probably would be more practical to print a prototype, cast it into plaster and melt the gold to pour into it. or you could sinter the gold, filling the mold with tiny little grains of gold, and then heat it up until they fuse, and then polish the surface smooth.

I like the molten gold idea. Liquid gold is so cool looking

You need a supernova 3d printer to reach that trillion degree centigrade forge

No no, print it, not create it. Check out mleku's note - it seems totally doable