3D printing is advancing rapidly and has the potential to revolutionize many industries by allowing for precise, complex objects to be constructed without labor-intensive modeling or machining. Recent advances have dramatically reduced the costs of 3D printers, putting the technology within reach of the general public. 3D printing uses successive layers of material to build up three-dimensional objects and can use plastics, metals, or even living cells depending on the application. Proposed applications of 3D printing include printed clothing, body scans to create figurines of people, printed architectural models and prototypes, and eventually entire printable houses and human organs.