Example：

In CNC production, the product will often have an internal R angle (radius) because the drill bit cannot create a perfect 90-degree angle. However, some customer designs specify a 90-degree angle. In such cases, we will communicate with the customer to explain that this product will have an internal radius due to the limitations of the CNC process. We will then inquire if this modification can be accommodated with their matching parts or if any adjustments are necessary to meet their requirements.

Additionally, it's important to ensure that the customer understands the implications of the R angle on the overall fit and functionality of their design. If necessary, we can offer alternative solutions, such as modifying the design to include fillets or chamfers, or using additional machining processes to achieve the desired 90-degree angles.