3D打印不同于传统的数控加工。这两种技术都是处理手牌的过程。3D打印手板被称为加法制造，数控加工则是减量化制造。3D打印和CNC有很大的区别。

　　3D printing is different from traditional NC machining. Both techniques are the process of handling cards. 3D printing hand board is called additive manufacturing, while numerical control machining is reductive manufacturing. There is a big difference between 3D printing and CNC.

　　在工艺上，3D打印增材制造是一层一层建造的，就像盖房子一样，一砖一瓦。而数控还原材料的制造就像一块刚出土的钻石，雕刻家需要精雕细琢，慢慢地雕刻出来作为模型的装饰品。所以在3D打印中，除了必要的支撑材料外，剩下的就是用来打印模型的材料，而3D打印并不存在结构复杂的模型加工成本更高的情况。

　　In terms of technology, 3D printing additive manufacturing is built layer by layer, just like building a house, brick by brick. The manufacture of CNC reduction material is like a newly unearthed diamond. The sculptor needs to carve it carefully and slowly as the decoration of the model. So in 3D printing, in addition to the necessary supporting materials, the rest is the materials used to print the model, while 3D printing does not have a higher processing cost of the model with complex structure.

　　3D打印在打印复杂的形状和不规则的结构，如曲线和中空结构等方面具有更多的优势。，3D打印可以加工传统方法难以加工的零件。在过去，传统的制造方法是一片空白，切割出不需要的区域，进行多维加工，或者使用模具，将金属和塑料熔铸成这样的零件，这对于加工复杂的零件是非常困难的。3D打印技术对于复杂零件具有很大的优势。它可以打印非常复杂的东西。

　　3D printing has more advantages in printing complex shapes and irregular structures, such as curves and hollow structures. First of all, 3D printing can process parts that are difficult to be processed by traditional methods. In the past, the traditional manufacturing method is a blank. It is very difficult to process complex parts by cutting out unnecessary areas, multi-dimensional processing, or using mold to melt metal and plastic into such parts. 3D printing technology has great advantages for complex parts. It can print very complex things.

　　3D打印实际上是关于快速原型的。如今，3D打印在建筑设计、医疗辅助、工业模型、复杂结构、零部件、动画模型等领域都有一定程度的应用。特别是在使用重型和精密机械的行业，如飞机、核能和火电等，3D打印技术“打印”出的产品自然无缝连接，结构之间的稳定性和连接强度比传统方法大得多。

　　3D printing is really about rapid prototyping. Today, 3D printing has a certain degree of application in architectural design, medical assistance, industrial models, complex structures, components, animation models and other fields. Especially in the industries using heavy and high-end precision machinery, such as aircraft, nuclear power and thermal power, the products printed by 3D printing technology are naturally and seamlessly connected, and the stability and connection strength between structures are much greater than that of traditional methods.

　　与其他快速成型技术相比，3D打印技术具有以下优点:2. 产品多样化不会增加成本;3.零时间交付;4. 无限的设计空间;5. Zero-skill制造;6、无空间，便携式制造;7. 材料的无限组合;8. 准确的物理繁殖。

　　Compared with other rapid prototyping technologies, 3D printing technology has the following advantages: 2. Product diversification will not increase costs; 3. Zero time delivery; 4. Unlimited design space; 5. Zero skill manufacturing; 6. No space, portable manufacturing; 7. Infinite combination of materials; 8. Accurate physical reproduction.