Shot Abrasive Blasting is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface, or remove surface contaminants. In the early 1900s, it was assumed that sharp-edged grains provided the best performance, but this was later demonstrated to not be correct. When the process of sand blasting was originated, sand was the only abrasive available. To day there are many abrasive; yet the term “ and blasting” is some time used to describe the use of almost any one of them.
