In recent years, the term 3D printing has changed from unfamiliar to familiar, gradually moving into people's life and work. However, there are still many people who do not know enough about 3D printing. 3D printing is not mysterious, it is just a new manufacturing and processing technology. 3D printing is a kind of rapid prototyping technology. It is a kind of rapid prototyping technology based on digital model (3D design file) file, using powder metal or plastic and other adhesive materials, through 3D printer, printing layer by layer to construct objects. Before we talk about 3D printing, let's take a look at 2D printing.

没错，我们生活中经常见到的喷墨打印机的打印方式就是2D打印，这种打印方式只能打印一个平面，而3D打印其实就是把这个平面一层层叠加起来，会变成实物，这也是为什么3D打印还有另一个名称“增材制造技术”的原因。

Yes, the printing method of inkjet printers that we often see in our life is 2D printing. This printing method can only print one plane, while 3D printing actually superimposes this plane layer by layer and turns it into a real object. This is why 3D printing is also called "additive manufacturing technology".
         

那么为什么那么多人推崇这种制造方式呢？这就要说到人类自古以来的生产方式，从古时候的铸造到工业革命时的机床加工，“等材制造”和“减材制造”一直是相对主流的加工方式，但这些加工方式有着废料多，不，生产周期长等问题。而3D打印的出现改变了这一切，3D打印机无废料，使用材料，生产周期短，上手门槛低以及一体成型等优点让加工制造从工厂走向了家庭和学校，催生了个人设计者，激发了无限创意的可能。

So why do so many people admire this kind of manufacturing method? This is about the production mode of mankind since ancient times. From casting in ancient times to machine tool processing in the industrial revolution, "equal material manufacturing" and "reduced material manufacturing" have always been the relatively mainstream processing methods. However, these processing methods have many problems, such as waste, environmental protection, long production cycle and so on. The emergence of 3D printing has changed all this. The advantages of 3D printer, such as no waste, using environmentally friendly materials, short production cycle, low starting threshold and integrated molding, make the processing and manufacturing move from factory to home and school, give birth to personal designers, and stimulate the possibility of unlimited creativity.

于为何3D打印会有这些优点，这里就出现了另一个问题，3D打印到底是如何打印制件的？

As for why 3D printing has these advantages, there is another question: how does 3D printing print products?

，使用建模软件建模，得到一个数据模型，然后将数据模型转换为3D打印机能识别的格式并放入3D打印机，设置完成后3D打印机就会自动完成所有的打印工序，整个流程消耗的时间很短，上手难度也不高，使用方便的同时，打印过程中不会有废料产生。

First of all, use the modeling software to build a data model, and then convert the data model into a format that can be recognized by the 3D printer and put it into the 3D printer. After the setting is completed, the 3D printer will automatically complete all the printing processes. The whole process consumes a short time, and it is not difficult to start. At the same time, it is convenient to use, and there will be no waste in the printing process.

得益于丰富的材料类型，3D打印快速成型技术的应用领域非常广泛，目前涉及到的行业有工业、汽车、建筑、教育、医疗、影视以及航天航空。

Thanks to the rich types of materials, 3D printing rapid prototyping technology is widely used in industries such as industry, automobile, construction, education, medical treatment, film and television, and aerospace.