3D printing is a kind of rapid prototyping technology. It is a technology that uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer based on digital model files. 3D printing is usually achieved by using digital technology material printers.

Commonly used industries are used in mold manufacturing, industrial design and other fields to make models, and then gradually used in the direct manufacturing of some products. There are already parts printed using this technology. The technology has applications in engineering and construction (AEC), automotive, aerospace, jewelry, footwear, industrial design, construction, dental and medical industries, education, geographic information systems, civil engineering, guns, and other fields.

The main application areas of 3D printing include the medical field, the automotive industry, the electronics industry, naval vessels, aerospace technology, and private custom underwear industries, which have great development prospects. 3D printing technology has appeared in the mid-1990s, and is actually the latest rapid prototyping device that uses technologies such as light curing and paper lamination. It is basically the same as ordinary printing. The printer contains liquid or powder and other "printing materials". After connecting to the computer, the "printing materials" are superimposed layer by layer through computer control, and finally the blueprint on the computer is turned into a real object. It is collectively referred to as printing technology.

Principles of 3D Printing Technology

The 3D printer has successfully printed an F1 racing car. The ordinary printers used in daily life can print computer-designed flat objects. The so-called 3D printers have basically the same working principles as ordinary printers, except that the printing materials are somewhat different. The printing materials of ordinary printers are Ink and paper, while the 3D printer contains different "printing materials" such as metal, ceramics, plastics, sand, etc., which are tangible raw materials. After the printer is connected to the computer, the "printing materials" can be superimposed layer by layer through computer control. Get up, and finally turn the blueprint on the computer into a real thing.

In layman's terms, a 3D printer is a device that can "print" real 3D objects, such as printing a robot, printing a toy car, printing various models, and even food. The reason why it is commonly called "printer" is based on the technical principles of ordinary printers, because the process of layered processing is very similar to inkjet printing. This printing technology is called 3D stereo printing technology.

There are many different technologies for 3D printing. The difference between them lies in the way the materials are available and the parts are constructed in different layers. Commonly used materials for 3D printing include nylon fiberglass, durable nylon materials, gypsum materials, aluminum materials, titanium alloys, stainless steel, silver-plated, gold-plated, and rubber materials.

The resolution of the printed 3D printer is sufficient for most applications (it may be rough on the curved surface, like the sawtooth on the image). To obtain higher resolution items, you can use the following method: first use the current The three-dimensional printer prints out a slightly larger object, and then slightly polishes the surface to obtain a "high-resolution" object with a smooth surface. Some technologies can use multiple materials for printing at the same time. Some technologies also use supports in the printing process. For example, when printing some upside-down objects, you need to use some easy-to-remove things (such as soluble things) as supports.