Sorry, I'm confused. Are you suggesting that we will have a 3D printer that can print ceramics, metal, rubber, and circuit boards? Because I just don't see it

Sorry, I'm confused. Are you suggesting that we will have a 3D printer that can print ceramics, metal, rubber, and circuit boards? Because I just don't see it coming. I certainly don't see how it could be any cheaper than simply buy metal stuff made in a factory with metal-only 3D printer, for example. Sure it may disrupt some industry: Boeing may start to use a 3D printer for airplane wings, Intel may use one for CPU cores and Nike may use one for sneakers. What I don't see is everybody having a magic 3D printer at home that can print airplane wings, CPUs and shoes. I'll believe that when I see one.