MakerBot: Replicator Z18
For those who like the freedom to build really big stuff with their 3-D printer, the Replicator Z18 is one top option. The name comes from the 18-inch height capability offered by the machine, while the Z18 offers up to 12 inches on both width and length. The Z18 specializes in printing large industrial prototypes and can also print more than one object at a time, with 100-micron layer thickness. Also worth noting: the Z18's incremental costs are held in check a bit by its use of MakerBot's low-cost PLA Filament.