3 d printing is a step towards progress. If the word "print" was previously associated with putting some information on paper, now the word "print" has got a different meaning. The essence of 3D printers is to create three-dimensional objects with layered application of materials. Simply put, now with the help of 3d printer people can create 3D objects not only in the virtual world but also in real world.

I know people who did not buy 3D printers, but created them themselves. That is, they bought individual parts and collected homemade 3D printers. And as there are craftsmen who bought a 3D printer and used it to "print out" the details for creating other 3D printers. That is, the printer printed the printer :)

In addition, their field of application is constantly expanding. With the help of a large industrial 3D printer enthusiasts printed out the house. Moreover, its use can be even in medicine. Some organs of the human body can be printed. I saw that with the help of a 3d printer they were printing a gun, not like we used to see it, but really working. In aviation, this also applies to the creation of some details. Even food is printed on a special 3d printer. As a result, we see a huge scope of 3 d printers. This is the technology of the future and I am sure that in the near future this will be an "ordinary" phenomenon when 3d printers will be very widely used in many industries.
Thank you!