Don't do the design in such a hurry. It is best to choose mold work and stay at the construction site for about 2 years. During this period, you should know more about the mold structure, design process and main problems of mold maintenance, and then switch to design after knowing the mold technology. The premise is that you must be familiar with CAD or 3D software, and you must be very skilled in drawing, so that you can redesign, and combined with practical experience, the designed mold will be more practical.