[iancmceachern]

They do this. This is the coolest one IMO:

https://mantle3d.com/

[daveguy]

That's not how mantle3d works. It's 3d printed metal alternating with CNC machining after several layers for precision:

https://mantle3d.com/how-it-works/

This is optionally followed by a pressurized furnace for sintering.