Media Blasting is the acceleration of particles by air, performed in a blast cabinet, to achieve a variety of physical effects on a part's surface. Media blasting is considered a “gross cleaning method” and is used to remove heavy scales and oxides. Surface effects are determined by media type, size, speed, and direction of impact. Blast medias readily available for Media Blasting include: aluminum oxide, glass bead, garnet, plastic and walnut shell. The visual appearance of a blasted surface tends to be a dull to bright satin-matte finish.