When we were acquiring the 3D printer, we evaluated several other printing technologies. The most convenient and colorful appeared to be simple technique that was the most novel. Mcor techonologies has created a printer that prints design on sheets of paper using conventional ink jet printer in color. These individual colored sheets are then glued together to form a thick layer which is then cut to shape. This is such a unique technology that we were tempted very much since this gives beautiful 3D colored objects as the output. Obviously, this takes a lot of paper but in the end, sometimes paper is cheaper than the plastic and is completely biodegradable.
The designs come out looking so beautiful and colorful. However, in our case, the 3D printed material was going to be used to build some prototypes and so plastic or PLA was our choice of material.