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Published on May 10, 2009
The B1A1 Rock Tumbler is a home built rock tumbler designed to tumble rocks in up to 4 truck tires. This video shows the rocks tumbling inside one tire. The load is 30 pounds of hammer broken stone, with 3 pounds of 46 - 70 silicone carbide grit and 1/2 gallon of water. The run has just started so the grit is visible and the water is still pretty clear.