Blast cleaning consists of bombarding the surface of a material with one of many types of sand, grit or shot. Normally this is carried out to remove paint, rust or scale, but sometimes it is required to impart a particular surface, or uniform finish, to the object being blasted.
The abrasive material used can be calcium silicate (sand), calcium carbonate, granules of iron silicate (chilled iron), silicon carbide, glass grit produced from recycled bottle bank glass, aluminium oxide, garnet and even walnut shells! Abrasive materials are available in many different sizes, from dust to 2.5mm.
Vacuum Grit Blasting
