I spend a lot of time socializing with people who build and develop 3D printers at a shop that operates 3D printers as a service. Printers include delta bots, M

I spend a lot of time socializing with people who build and develop 3D printers at a shop that operates 3D printers as a service. Printers include delta bots, Makerbot 2X, and a CubePro. Larger parts can be problematic on consumer quality 3D printers (particularly if they aren't being constantly fussed with). Very routinely 3D printer owners seem to have to put large amounts of time in to getting the printer to work correctly, and large complex pieces can take more than one (8+ hour) attempt. Most of the things larger than a phone case (and it's the height direction that seems particularly problematic) have trouble printing in some fashion or another. This means that several of the most useful applications just aren't there yet.