sandblasting9

A sand blasting machine has three basic parts: an air
compressor, a pressurized tank, and a hand-held
pressure gun. A hopper sits on top of the gun, which is
filled with silica sand. The compressed air is fired
through the gun when the trigger is pressed, which
draws the sand from the hopper through the barrel.
The sand is then drawn through the hose, causing the
material to be cleaned.