Manual Wet Sand Blasting Machine is used for inkjet manual processing of the outer surfaces of the openwork products, and also for unidirectional pumping to reduce roughness of the internal surfaces of the through and cross holes, grooves, cavities, reducing the magnitude of the surface defects in the form of scratches, chips, burrs, water jet cleaning from scale, rust, grease, carbon, salt deposits, oxides and other impurities, remove surface modified layer.