Several uses are possible:
Removal of paint or rust to restore the initial material.
To even a surface, to improve its appearance, or to create a grainy, matt or satin effect.
To modify the roughness of a surface in order to improve the adherence of a glue or a paint.
Low pressure blasting or rubbing
This consists in spraying a soft abrasive such as natural (plant debris) or plastic particles which will have the advantage of stripping the part without damaging the support. Low pressure blasting corresponds sandblasting at a low air pressure, using a fine abrasive, for precision work without damage to the part.