Corporate is reviewing them for the company I work for. It will be for the guys in the shop who are fixing the stuff we geologists break. They'd like to buy one and keep the repairs in house. If it rolls in the door by fall ill let you all know how cool or how much a hassle it is.
Just at quick glance I suspect the device has limited uses. You must use it very carefully, especially the hand held version. If you make a quick turn because someone taps you on the shoulders you will tattoo him with severe burns and/or blind him. The rusted object looks like it has a thin layer of rust from humidity and the object was not left outside in the rain, snow and salt. Rust is oxidized iron, if you heat rust you vaporize the water content and convert the rust back into iron. Even that thin layer of rust on the object in the video may not come out as it was originally. There may be pitting and surface distortion. I am only guessing but this device may only be effective on new objects that need to be prepared for plating or painting in manufacturing and not very effective for use in restoration. Objects that are moderately or heavily rusted may be better prepared by blasting in a media blaster. Then there s the cost.
