Why Vapour ?
The illustrations below show the different natures of grit, bead, and vapor blasting. The aggressiveness of dry grit and bead blasting are shown in the first two illustrations which demonstrate the severe 90° ricochet that occurs when using these methods. The third illustration shows the gentler, but just as effective, vapour blasting method. The ricochet of media is reduced due to the cushioning from the water; the angle of the media is changed producing a lapping effect travelling across the surface, giving an even satin/polished finish.