You will be hearing about 3D printing. And what I know about 3D printing. 3D printers Is they require a special kind of string to the 3D model. I also know that you can make a 3d model on a computer and them it will 3D print it. How I got into 3D printing is I just found it while I was watching videos on Youtube and I saw a video on 3D printing. And then I found out that people made 3D printers without buying them I saw a lot of cool 3D printed stuff.Like one person made a 3D printed arm that could be turned into a punching arm.