
thumb|upright|Sandblasting a stone wall thumb|Diesel powered compressor used as an air supply for sandblasting thumb|right|A Pitting corrosion|corrosion pit on the outside wall of a pipeline at a [[coating defect before and after abrasive blasting]]
thumb|upright|Sandblasting a stone wall thumb|Diesel powered compressor used as an air supply for sandblasting thumb|right|A Pitting corrosion|corrosion pit on the outside wall of a pipeline at a [[coating defect before and after abrasive blasting]]
Sandblasting, sometimes known as abrasive blasting, is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove surface contaminants. A pressurised fluid, typically compressed air, or a centrifugal wheel is used to propel the blasting material (often called the media). The first abrasive blasting process was patented by Benjamin Chew Tilghman on 18 October 1870.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).