The 3-D printing technology allows the low-cost creation of structures based on user-defined configuration parameters. Unlike other plastic formation technologies, there is no tooling cost related to the creation of a mold. Because of this, highly-customized structures can be created with a minimum production quantity of one. This paper considers the maximum possibilities enabled by the use of 3-D printing for medical, commercial, domestic and industrial applications. These mission types include low-cost student-centric projects, atmospheric, scientific and engineering development missions. In this paper we seek to explore the construction, working and future applications of 3-D printing Technology.