3D printing technology has come a long way over the past few decades. These days, you can purchase an entry level 3D printer for just a few hundred dollars. This price tag can get you started on the hobby at home. However, if you plan to use your printer for professional purposes expect to pay $4,000 or more. 3D printing works by overlapping thin layers of a substance, usually plastic, silicone or carbon fiber, into a particular shape.