CNC Machining and metal stamping is all about processing drawings and making them real. A complete set of drawings can effectively control the accuracy and evaluation of parts processing, and high-quality processing drawings can also improve the processing efficiency of parts. How to make a set of high quality engineering drawings? My experience is as follows: 1. Initially develop a production plan for parts. First of all, we must figure out the structure and size of the parts, and initially judge the processing technology of the parts. Because the different drawings should use different processing techniques, and the processing efficiency is different. 2. Filter the best practices based on differentiation. Samples are sampled according to the original drawings but can be processed by two or more different processes, for differentiation and comparison. The most labor-saving and material-based solutions are selected and suggested to client to minimize costs to maximize profits. 3. Skills for giving out work instructions. According to the product ideas, the engineering drawings are drawn out, and the drawings are drawn according to the principle of each production process. The drawing should take into account the inspection size, the tolerance requirements during the processing, and the convenience of the inspection of the processing dimensions. In short, it is necessary to provide convenience to the production staff under the condition of satisfying the size of the customer’s parts. In short, it is to let the instructions issued by the clients be understood by the workers, easy to process and easy to test. 4. Ensure the accuracy of the work instructions. After the work instructions are completed, they need to be reviewed, at least two or more people are reviewed, and then control mass production. 5. Precautions for changes to the work instructions. Every instructions should be properly kept. If client need to change the plan, you need to apply for the previous guidance, and then follow the process to control and issue the change instructions.