We recently shared our take on why 2D is like 3D printing. While we conceded that the devices themselves are different, we made the argument that the process of printing in two or three dimensions is essentially the same:
File is created >> File is sent to print device >>
File is printed >> Item is finished (bindery/decoration)
We also made the point that like 2D printing, the 3D printing market will eventually service customers at home (via desktop printers), online (via web-to-print) and at retail (via 3D print shops.) The retail channel has yet to be developed and we think this represents a huge opportunity for traditional printers, print franchises, big box office supply stores, and shipping companies like FedEx and UPS.
One of the objections raised by some in these markets is that the substrates and consumables used in 3D are too dissimilar from those used in traditional printing.