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I have a book on blasting cabnets. I was going to build one from a 55 gallon drum. It had a bucj of good info on media. I'll start looking for it.

Here are the most common types
Sand
Aluminum Oxide
Silicon Carbide
Garnet
Glass Beads
Black Magic
Walnut Shells
Plastic Pellets
 

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Menards here in Indy sells Black Magic, which i believe is a type of mill-slag. its fairly coarse and stays sharp for a few uses. typical silica sand loses its sharpness after 3-4 uses and give you lung problems. i use Black Magic or glass bead (on stainless).

matt
 
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