Designers and engineers can use 3D printed mold prototypes for functional testing and design validation, thus accelerating the process of products from design to market. For complex molds, such as those with internal cooling channels, complex cavities and fine details, metal 3D printing can directly manufacture the finished product in one go, without the traditional multi-part assembly. This not only reduces the assembly error, but also improves the overall performance and life of the mold. Metal 3D printing technology is ideal for the production of small batches, personalized or customized molds. Because 3D printing is an additive manufacturing process, it does not require additional tools or molds, so it can quickly adapt to design changes to meet individual needs.