Whether you graduated from a professional school or not, you should first find a job in a mold factory. Otherwise, learning is air-to-air, there is no internship, no practical experience, and no boss will use you to design and program, because your work mistakes will bring great losses to the boss.

With a job, listen to the boss's arrangement, start from the most basic work, gain the boss's trust through continuous learning and showing your talents, and have the opportunity for you to practice and improve gradually.

As for learning, there are only two ways: learn from books and ask the teacher (master) to teach you. It is best to learn from books, introduction and difficulties, and learn from teachers (including teachers in class and teachers at work) systematically. You should have an eye for finding teachers at work. You can't find potential competitors, otherwise you will study. If he loses his job, will he teach you?

As for how long you study and how much you can learn, everyone is very different. First of all, you have to have some limited talents-you have a strong spatial imagination, and it is best to learn solid geometry in middle school. People with strong interest will learn design quickly, and they must first understand two-dimensional engineering drawings in their work. As for programming, if you have the practice of operating CNC milling machine, you'd better learn it quickly. If, with the conditions I mentioned above, after four months of study, you can learn the preliminary design and programming. Comparatively speaking, programming is easier and design is more difficult-because design requires a wider range of knowledge.