What is the principle of 3D printing?

3D printer, also known as three-dimensional printer (3DP), is a kind of machine of cumulative manufacturing technology, that is, rapid prototyping technology. It is based on a digital model file, using special wax materials, powdered metal or plastic and other adhesive materials to print layers of adhesive materials to make three-dimensional objects. At present, 3D printers are used to make products. The technology of constructing objects by printing layer by layer. The principle of 3D printer is to put data and raw materials into the 3D printer, and the machine will make the product layer by layer according to the program.

The biggest difference between 3D printer and traditional printer is that the "ink" it uses is real raw materials. There are many forms of stacking thin layers, and the types of media that can be used for printing are various, from various plastics to metals, ceramics and rubber materials. Some printers can also combine different media to make the printed objects hard at one end and soft at the other end.

1. Some 3D printers use the "inkjet" method. That is, a very thin layer of liquid plastic material is sprayed on the mold tray with a printer nozzle, and this coating is then placed under ultraviolet light for treatment. After that, the mold tray drops a very small distance for the next layer to be stacked up.