Media blasting also known as sandblasting is a great preparation method for powder coating. When powder coating, it is very important that the item you are coating is completely clean of oils, dirt, paint, rust, corrosion, and damaged plating (zinc, nickel, chrome, etc).
History. The first recorded instance of sandpaper was in 1st-century China when crushed shells, seeds, and sand were bonded to parchment using natural gum. Shark skin (placoid scales) has also been used as an abrasive and the rough scales of the living fossil, Coelacanth are used for the same purpose by the natives of Comoros.
SOLUTION: Wear an anti-dust mask and keep hands covered. Or try wet sanding, which uses a special type of sanding paper which is rinsed repeatedly during the process — this means fewer dust particles are released into the air, making it easier on the lungs and skin.