Abrasive blasting is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a roughsurface, roughen a smooth surface, shape a surface, or remove surface contaminants.
There are several variants of the process, using various media; some are highly abrasive, whereas others are milder. The most abrasive are shot blasting (with metal shot) and sandblasting (with sand).
