The tool is installed using the cantilever, the force of the tool concentrated on the free arm. According to that the physical equation, the deviation of the tool is proportional to the length of the tool. For example, a diameter of 6 mm, length 24 mm compared to the same tool in the tool and a length of 20 mm, the deviation is 50% higher than the latter      Tool length will increase 20% increase 50% deviation tooling A variety of negative effects on the cutting edge of major deviations from the tool, such as tool chatter, swing and shock loads. So should try to reduce these deviations to a minimum, which is very important. Reduce the length of the tool is the best way to control the tool offset, but still able to maintain a high cutting speed of the material. Ugs nx company in machining, tool length consultant presented to the user requirements for the minimum length of the tool, in order to ensure that sufficient length to process a particular geometry.