Anything useful to a wide audience simply gets manufactured in a more economical fashion.
3d printing is firmly about the long tail. I don't see how a "killer app" could make much sense.
3d printing is firmly about the long tail. I don't see how a "killer app" could make much sense.
In the case of normal printing, the desktop printer didn't kill the rotary printing press, (althought the internet digital press may). Desktop printers and rotary printing presses exist for different use cases. Printing notes to red mark or travel tickets vs. a glossy magazine/newspaer. The relationship is akin to 3D printing plastic / injection moulded plastic and will likely have different use cases.