The 3D printers are rapid prototyping machines that create three dimensional models that make an emulation of the feel, appearance and functionality of the prototypes from the STL or StereoLithography data. These objects are built inside the printers in the form of very thin layers and build a working model.
The best part about these printers is that they are portable. They are compact and small which makes them usable in different kinds of office environment. In most cases, the entire structure is fit in to an eight inch sided cube.
Another good thing about the 3D printers is that they are not very difficult to understand and use. Unlike the RP machines, No training is required to operate the 3D printers. The 3D printers are an economic option as well and the cost of maintenance is not that high either. The lowest possible price of these printers is somewhere around ten thousand dollars.