3D打印不同于傳統的數控加工。這兩種技術都是處理手牌的過程。3D打印手板被稱為加法制造，數控加工則是減量化制造。3D打印和CNC有很大的區別。

　　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.

　　在工藝上，3D打印增材制造是一層一層建造的，就像蓋房子一樣，一磚一瓦。而數控還原材料的制造就像一塊剛出土的鉆石，雕刻家需要精雕細琢，慢慢地雕刻出來作為模型的裝飾品。所以在3D打印中，除了必要的支撐材料外，剩下的就是用來打印模型的材料，而3D打印并不存在結構復雜的模型加工成本更高的情況。

　　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打印在打印復雜的形狀和不規則的結構，如曲線和中空結構等方面具有更多的優勢。首先，3D打印可以加工傳統方法難以加工的零件。在過去，傳統的制造方法是一片空白，切割出不需要的區域，進行多維加工，或者使用模具，將金屬和塑料熔鑄成這樣的零件，這對于加工復雜的零件是非常困難的。3D打印技術對于復雜零件具有很大的優勢。它可以打印非常復雜的東西。

　　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打印實際上是關于快速原型的。如今，3D打印在建筑設計、醫療輔助、工業模型、復雜結構、零部件、動畫模型等領域都有一定程度的應用。特別是在使用重型和精密機械的行業，如飛機、核能和火電等，3D打印技術“打印”出的產品自然無縫連接，結構之間的穩定性和連接強度比傳統方法大得多。

　　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.

　　與其他快速成型技術相比，3D打印技術具有以下優點:2. 產品多樣化不會增加成本;3.零時間交付;4. 無限的設計空間;5. Zero-skill制造;6、無空間，便攜式制造;7. 材料的無限組合;8. 準確的物理繁殖。

　　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.