Can we print a human body part?

Doctor Peng Jiang and his colleagues at the Chinese People’s Liberation Army General Hospital are among the first in China to test 3D printing technology in the treatment of patients with bone problems.

According to online definitions, 3D printing is essentially a “layering” process in which powders are fused together layer by layer. Theoretically, any material - solid or liquid - can be fused into any shape, just like a sculpture. But the process is time-consuming and expensive, depending on the size, material and complexity of the model. Why bother, then, to use 3D technology if it takes a few hours to print a cup, when dozens can be produced in factories in far lesser time?
(Quelle und weitere Infos: Youtube)