his is a very original travelling post of you.just awesome creativity of knowledge..i am always learning alots of new thing of your post..obviously appreciate your thought..my dear friend..@velimir. 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.thanks to sharing for your great post of travelling.. very well done..take care yourself and best of luck of your great work.