>> 3D printing is a process of making three-dimensional solid objects from digital designs in an additive manufacturing technique.
>> While there are different kinds of 3D printing, all 3D objects are generally built out of layers. A 3D printer starts with the bottom layer, waits for it to dry or solidify, and then works its way up. This layering process differs depending on the printer and the material it works with — metal, plaster, polymer, resin — but it also depends on whether it’s an industrial or commercial 3D printer.
>> 3D printers can be used to create titanium aircraft parts, human bones, complex, nano-scale machines, and more including its ability to scan a cup, and then create an exact copy!