What is 3d printing? please explain

3D printing is a type of rapid prototyping technology, which is a technique of constructing an object by printing layer by layer, based on a digital model file, using a bondable material such as powdered metal or plastic. Simply put, if an object is dissected into a very large number of thin layers, 3D printing is the printing of the thin layers, layer by layer, with the upper layer covering the lower layer and combining with it until the object is printed and shaped.

3D printing is usually done using digital technology material printers. In the past, it was often used to make models in areas such as mold making and industrial design, but it is now being used to directly manufacture some products, and there are already parts printed using this technology.

Military advantages:

Military equipment parts are mostly complex shapes, the use of traditional processing methods are difficult to manufacture, only grinding and cutting and casting, the use of 3D printing can be printed directly, saving time and cost.

3D printing technology is simple, easy to operate, to avoid outsourcing the processing of data leakage and huge time-consuming, for the military industry is particularly important.

The military industry for equipment development, improvement is very important, often single-piece trial production, small batch production, due to 3D printing manufacturing preparation and data conversion time is greatly reduced, the production and development cycle and cost reductions, can reduce expenses to meet the needs of other military projects.

At present, the main application direction of 3D printing technology 1), industrial enterprises, new product design, trial production and rapid printing and shaping; 2), personalized product design and rapid printing and manufacturing; 3), a variety of creative products, toys, gifts, cultural relics, animation and animation game characters and character models, such as cloning and copying; 4), 3D photo gallery; 5), the medical industry, the human body organs, medical equipment printing; 6), Architectural modeling; 7), education, scientific research, military, archaeology, sculpture, funeral and other industry applications

.