This process sounds cool!
Cryogenic tumbling process whereby the parts are brought to an ultra cold temperature and blasted with a polycarbonate media. The burrs become frozen and break off cleanly when impacted by the media. Temperature, time, tumble rate, media size and speed are critical factors that must be optimized to get the best results. Having said that, once the process is "dialed in", it very repeatable, reliable and cost effective. We have many customers who are saving time and money by using our cryogenic deburring services. If volumes are large enough, you can bring the process in-house as well.