There are many different types of abrasive blasting media available. Each of these media will produce a different finish on the surface being blasted. The finishes can range from ultra-rough to nearly polished to no affect at all. There are many variables that determine the surface finish achieved including blasting pressure, angle and distance of the blasting, hardness of the grit media, blasting time, etc.
Knowing the basic differences in abrasive blasting media is required to determine the optimal process for different applications. In addition to the media type, grit or mesh size is another factor to consider. The final choice of media depends on the nature of the work required and on the blasting equipment that is employed.
The series of posts to follow this one will deal with abrasive media selection only and outline some of the advantages of the different types of blasting media and some guidelines for choosing the best media for your application