The invention relates to a method of fitting a machine tool with tools which are cooled by a free-flowing medium during operation of the machine tool, comprising the following method steps: a plurality of various tools are provided in order to carry out successive machining operations on a workpiece; a plurality of various nozzle devices are provided, each of which can be fitted together with a specific tool and connected to a medium source and has such a medium jet geometry that the respective medium jets strike locations where the machining takes place; a specific nozzle device is in each case fitted together with a specific tool and connected to the medium source before the operation of the machine tool is started.