In the past, you could draw anything you imagine on a computer and then print it out on a piece of paper. Now we have what we called 3D printing. With this, we can print things we really use.
You need to have a 3D printer in to print 3D objects. Now you can even buy easily in a mall. They might be as small as the size of a ring even as huge as a room. It on what object you are going to make. You need a computer to make the design and then send your design to the printer.
Jason, a dentist, had a patient a toothache. After looking over the patient carefully, Jason found out bad tooth. It was such a terrible situation he decided to pull it out. First of all, he took a picture of the tooth with the in his smart phone. Secondly, he designed a 3D tooth on the computer to the picture. After that, he used a 3D printer to print the new one and put it into the mouth of the patient.
Does it sound interesting? I am sure 3D printing technology will a difference to the world.