Full disclosure: the conventional bracket was stamped in a press and then laser-welded by robots. It took about a three-car garage's worth of space, an easy $250k worth of tooling and probably 12 minutes to make. The 3d-printed bracket was laser sintered in a powdered-aluminum Selective Laser Sintering 3d printer that's about the size of a dishwasher and cost about a million and a half dollars. It also took prolly 30 hours.
So we're not there yet? But it's interesting to see where it might go. That 3d bracket, for example, could be sand-cast without too much drama.