Sandblasting is a term used to describe abrasive blasting of hard products. Abrasive blasting is the process of applying an abrasive media such as sand to an item at high pressure to clean it or remove products such a rust, paint etc.
It is generally used to remove products from machinery and metal. Sandblasting does not just use sand as a media and other commonly used abrasives are glass beads and crushed walnut and coconut shells. The high pressures used in sandblasting would obviously cause damage to delicate surfaces.
Beam Clean & Restore use a method called soda blasting and this works by using a non abrasive media such as bicarbonate of soda and only using extremely low pressures to work. Even though the pressures used are so low they can still effectively removes products such a paint, varnish, smoke damage, dirt and grime without damage to the delicate surfaces.