Maybe this is too off topic, but I've always wondered why injection molding couldn't be done cheaper (albeit slower) by just milling aluminum to be used as molds.
Why is there such a large gap between 3d printing something and setting up an expensive ($50k+) and time consuming (months) injection molding station?
Why is there such a large gap between 3d printing something and setting up an expensive ($50k+) and time consuming (months) injection molding station?