High-energy finishing describes any form of abrasive media-based parts finishing that uses more than the force of gravity to deburr, radius, smooth, burnish, descale or otherwise prepare parts. It might be easier to define what high energy is not. It is not tumbling barrels: open- or close-ended, conical, octagonal or cylindrical. Tumbling barrels have been the workhorses of mass finishing for hundreds of years. They work on the simplest of principals. Mix a part long enough with the right abrasive media, and the burrs or imperfections will eventually wear off.