According to the shape of the parts, the rapid prototyping system can make a section with a certain thickness and a specific shape at a time, and then bond them layer by layer to get the three-dimensional parts that need to be manufactured. Of course, the whole process is controlled by computer and completed automatically by rapid prototyping system.

　　快速成型可以在無需準備任何模具、刀具和工裝卡具的情況下，直接接受產品設計（CAD）數據，快速制造出新產品的樣件、模具或模型。因此，RP技術的推廣應用可以大大縮短新產品開發周期、降低開發成本、提高開發質量。由傳統的"去除法"到今天的"增長法"，由有模制造到無模制造，這就是RP技術對制造業產生的革命性意義。

　　Rapid prototyping can directly accept product design (CAD) data without preparing any mold, tool and fixture, and quickly manufacture new product samples, molds or models. Therefore, the popularization and application of RP technology can greatly shorten the new product development cycle, reduce the development cost and improve the development quality. From the traditional "removal method" to today's "growth method", and from mold manufacturing to mold free manufacturing, this is the revolutionary significance of RP technology to manufacturing industry.
           

　　快速成型技術的基本原理是：

　　The basic principle of rapid prototyping technology is as follows:

　　將計算機內的三維數據模型進行分層切片得到各層截面的輪廓數據，計算機據此信息控制激光器（或噴嘴）有選擇性地燒結一層接一層的粉末材料（或固化一層又一層的液態光敏樹脂，或切割一層又一層的片狀材料，或噴射一層又一層的熱熔材料或粘合劑）形成一系列具有一個微小厚度的的片狀實體，再采用熔結、聚合、粘結等手段使其逐層堆積成一體，便可以制造出所設計的新產品樣件、模型或模具。

　　The three-dimensional data model in the computer is sliced by layers to obtain the profile data of each layer cross-section. According to the information, the computer controls the laser (or nozzle) to selectively sinter layer by layer powder material (or solidify layer after layer of liquid photosensitive resin, or cut layer by layer of sheet material, or spray layer by layer of hot-melt material or adhesive) to form a layer by layer A series of sheet-like bodies with a small thickness can be made into one layer by layer by means of fusion, polymerization, bonding, etc., so as to produce the designed new product sample, model or mold.