Keeping work cool is a sure-fire way to improve accuracy during machining, but every method has drawbacks. Liquid cooling is very effective and lubricates well, but it’s messy and the hardware’s expensive. Air cooling, while cheap, doesn’t do the job as well. A company called ITW Vortec markets a device which is advertised as combining the advantages of both, courtesy of a subzero air stream. Their Cold Air Guns take 100psi compressed air, spin it around a tube’s inner diameter at a million RPM, and the resulting air currents send hot air out one end and cold air out the other. Sounds like science fiction, but there seems to be good science backing up their claims.
Pricing is targeted at a middle ground between liquid cooling and conventional air cooling setups. A kit, complete with air filter, stand, and gun, runs for $364 from Vortex Air themselves, or $343 from Production Tool supply. They’re asking a hefty price for what seems to be a very simple product, but it’s a lot cheaper than a liquid cooling setup. With no moving parts, odds are they won’t need any servicing, so the price should be a one-time deal.