Method and apparatus for cooling tools, especially plungers and molds for glass forming machines, in which a cooling liquid is sprayed in atomized form through one or a plurality of nozzles against the tool surface to be cooled so that the liquid will evaporate upon contact with the surface to cool the latter. Spraying of liquid through the individual nozzles may be controlled either by the operator or automatically through sensing means sensing the temperature of the tool to be cooled.
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