I got a comment from a subscriber on my post about rock and stone sandblasting and he suggested a good abrasive to use was corundum. I have never actually used corundum abrasive as a sandblasting media for my blaster so I decided to make a write up here about what it is.
I write about aluminum oxide alot because it is very hard, but corundum is known to be even better. Corundum is actually a type of aluminum oxide in a crystalline form. It is known as the second hardest natural mineral in geology right behind diamond with a hardness of 9.
As Emanulle said, it works great for sandcarving harder items such as marble, rock, or glass. The harder your abrasive is, the easier or faster you will sandblast into the item.
The take away for this post is: if you want to use a longest lasting abrasive that cuts quickly, try out corundum abrasive for your sandblaster unit. Ideal for the hardest of materials.
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