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Old 05-16-2012, 06:22 PM
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Originally Posted by
Yes there are several grades of glass bead. The stuff Harbor Freight sells is a courser grade. I use a fine grade. Leaves aluminum like new. The course stuff makes aluminum darker similar to cast iron look.

DO NOT blast engine parts such as pistons that are part of an assembly. Such as hung on rods. The glass beads are very hard to wash out and a couple of grains will ruin an engine..
Thanks! Any idea where I can buy it from? It would suck to have it shipped but idk where I can really go to get it.
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