Abstract
Today, it seems that MQL system is started to use not only from environmental issues but also efficient manufacture. Three types of cutting tests were done and compared MQL system with DRY system. The result shows that the cutting force of MQL system is lower than DRY system and on the other hand, the voltage generated by cutting of MQL system is higher than DRY system. It is supposed that the difference between both systems is caused from crack interaction mechanism.
