You've probably already heard that 3D printing is the technology of the new millennium and promises huge benefits to those who use it? Is it so? In what areas is its use justified and where is it not? Is it true that this technology can replace classical manufacturing technologies? You will learn the answers to these and other questions in this book. In order not to be unfounded, I will give you examples of practical use in the work of many small businesses. I would really like to see 3D printing develop rapidly in Russia. I believe that thanks to you and me, this will happen faster and better.