Vortec (Cincinnati, Ohio) has introduced the Cold Air Gun, which delivers a stream of subzero air to provide spot cooling for a variety of process, fabrication, production and assembly applications. The frigid air generated by the gun also can extend tool life, improve product finish and allow increased feed rates on dry machining of plastics, composites, metals and other materials. Using only factory compressed air, the internal vortex tube separates the compressed air into hot and cold air streams to generate temperatures as low as -30°F/-34°C or refrigeration up to 6,000 BTU. The gun comes with a 5-micron auto-drain filter, an integral muffler for quiet operation.