Basically, the main advantage of CNC machining is the improved accuracy, efficiency, productivity and overall safety. Operators are less at risk because human interaction is decreased. Many applications of CNC machining have the machines operating unmanned for significant periods of time. The software automatically stops operations and asks for human help only in cases of errors and other problems. The reason is that on the mirrored part you will be doing conventional milling. This is where the cutter tends to go into the finished surface. Machining both ends Sometimes, a job requires you to machine both ends of a part held on a vise and you also need to try using one of the tools for the stop. The efficiency of the cutting bed would be based on what kinds of materials and cut are made. For example, T-slot cutting bed could hold different kinds and sizes of materials, but they are not ideal for speed cutting. There are additional features which could be based on the models of the wood router. When cutting metals (usually the non-ferrous types like aluminium), there is a coolant system used to cool the materials and the tool itself. There are other tools that may be installed, too tool sensor, touch probe and automatic tool changer. Cutting bed Cutting beds come in several designs but have the same functions to support and secure the materials being cut. Flexibility could also mean that CNC machines are quick to reprogram to create new products. They could easily shift from one product to another. Although there are major advantages of using CNC machines, it is not that perfect. They also have limitations. Major limitation would be the cost. Woodworkers, whether they are hobbyists or professionals, would cost a major factor in updating their manufacturing systems. Though the benefits may be great, there are still woodworkers who are not confident enough with their CNC router building skills. Others may have technical background, while others may be completely clueless. To help woodworkers, there are different websites and forum where they can interact with other woodworkers and ask them about their CNC router building experience.