Automatic drilling on lathe with coolant on background of control panel. To combat heating of a used cooling with cooling emulsions or coolants. When drilling on a lathe it is often possible to arrange flow of liquid directly to drilling point. Coolant supply can also take place via channels in drill bit, if it allows machine. These channels are made in many solid drills and in all of hull. Pressure coolant washes away chips from cutting zone, that allows to avoid re cutting.