Abrasive grit blasting (also commonly known as abrasive blasting or sandblasting) involves forcibly propelling an abrasive material against a surface under high pressure.
The blasting material (also known as media) is propelled against the surface by a pressurised fluid (usually water), vapour streams (usually steam), compressed air, or by a centrifugal wheel.
The process is used to smooth rough surfaces, roughen smooth surfaces, shape a surface or remove surface contaminants.
Different variants of the blasting process involve different media, which range in their levels of abrasiveness, with some being highly abrasive while others are very mild in effect.
The most abrasive methods include shot blasting (which uses metal shot) and sandblasting.
Moderately abrasive blasting methods include glass bead blasting, plastic media blasting (using plastic stock), and organic blasting with walnut shells and corncobs.
The mildest versions include soda blasting (using baking soda), ice blasting and dry ice blasting.
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