Sand blasting is also known as bead blasting and abrasive blasting, which is a generic term for the process of smoothing, shaping and cleaning a hard surface by forcing solid particles across that surface at high speeds; the effect is similar to that of using sandpaper.
source/image(PrtSc): NightHawkInLight
In this video I show how to make a sandblaster and use it to dig fossils out of rock.This project was quick and easy, and can be scaled up using larger tubing for a full size sandblaster.
The small brass tubing used in the video was 3/32″ (2.38mm) in diameter, which was about perfect for baking soda or sand as blasting media.Watch the video from NightHawkInLight for more info.
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This method is ideal for cleaning internal and external surfaces because the operator is generally able to send the stream of water into places that are difficult to reach using other methods.
