This seminar report discusses 3D printing and provides an introduction to the topic. 3D printing, also known as additive manufacturing, involves using digital files and additive processes to lay down successive layers of material and produce a three-dimensional solid object. The report provides a brief history of 3D printing and describes how it works by starting with a virtual design, discusses current and potential applications such as producing car parts, space construction, medical implants, and food, and concludes by listing some example uses and a few references.