The abrasive particles are suspended in liquid, generally water, and pumped to the nozzle in slurry form. The compressed air stream is supplied in the nozzle to increase the velocity and positive pressure when it comes in contact with abrasive slurry. The pressure pump is made up of wear resistant material. Use of wet blaster is recommended for surface finishing operations and light mark.
It is also useful in cleaning, deburing holes and precision cutting tools which are inaccessible by any other method. With use of fine abrasive, a surface can be super finished with wet blasting.