Use CNC  engraving machine should also pay attention to the spindle temperature, pay attention to the spindle temperature  at any time, beware of overheating spindle damage (note:  summer due to hot weather  air temperature is higher, so the spindle temperature will be  appropriately higher, hot  spindle but as long as the hand can be touched briefly can  be  normal use). Some carving  machine factory spindle is not equipped with circulating cooling system, when the temperature  is too high, should always pay attention to the  temperature of the water tank to increase new cold water, no circulating cooling system stone carving machine  equipment easy to cause motorized spindle damage, so in the beginning of the purchase must pay attention to polishing eyes.