The prototype is also the prototype, which is the first step to verify the feasibility of the product by making a sample before the product is designed for mass production. It is used to check whether the product meets the design requirements. The outstanding advantage of the prototype 3D printer is that it can directly generate parts of any shape from the computer graphics data without machining or any molds, thereby greatly shortening the product development cycle, improving productivity and reducing production costs. Compared with the traditional technology, the cost is reduced by abandoning the production line, and the material waste is greatly reduced.