Increasing the radius can here closed parts of the processing time is reduced by 20% Compared with other characteristics, some of the features require more careful programming and machining. For example, in the processing of mold parts, often encounter some of the smaller concave radius and narrow slot. Therefore, you should let your staff to understand this kind of tool design potentially challenging process instances, they will make your process easier. For example, most of the surface of the closed mold does not require precise vertical fillets and slots. These are easy to fix, so that the parts of the processing easier and faster (Fig. 4). In short, effective, high-speed machining is not only related to the spindle speed, feed rate and extent smooth toolpath, but also noted that the nature of the tool path itself, and even involves more extensive exchanges and contacts.