Trojan horse design helps DFrobot company to build a 3D printer based on Delta structure. This 3D printer is based on the price and convenient use of the people, trying to bring more people the fun of 3D printing. This product design needs to reduce the cost of the product as much as possible under the premise of beautiful and practical. Trojan horse design through brainstorming and creative divergence, trying to make the product better. In the early stage of creative design, Trojan horse constantly searched for mature processing and manufacturing technology, and put forward a series of beautiful modeling schemes on this premise. The appearance design of this 3D printer is ingenious, and the overall use is a stretched triangular shape, simple and lively, which can quickly open the gap with ordinary 3D printers on the market, bringing consumers a feeling of shine at the moment. At the same time, the beautiful color matching also adds a sense of technology to the product, and the reasonable design layout also makes the product not take up too much space, which is more suitable for users to use in the home. The price of this 3D printer is close to the people. Compared with the price of more than 6000 RMB, the price of this printer is half cheaper and easier to be accepted by consumers. This is not only due to the breakthrough in printer technology, but also because its appearance design takes into account the factors of production cost and beauty. The Trojan horse design selects the aluminum stretching molding process for this product, and the design scheme takes into account the versatility of the parts and greatly reduces its production cost. Trojan has been committed to opening more product profit channels for customers, which can help customers to obtain product promotion and sales under financial platforms such as crowdsourcing, and realize the whole process service of product development. The project has been prepared on the Kickstarter, successfully completed the target and raised 250,000 pounds. The project also raised 860,000 RMB on the sales platform. This is only the beginning. Trojan hopes to help more customers realize products and services and improve the competitiveness of customers' products.