Machine Wrecker (Diamond Charge)
Machinery may be made inoperative by shearing its drive shaft. To make the diamond charge (Figure 7). rut a piece of tinfoil, paper, or burlap Into a diamond shape, with the long axis several inches longer thaa the circumference of the shaft to be sheared. The short axis should be about 1/2 the length of the long axis. Mold a plastic explosive over the diamord and place blasting caps into the explosive at the short axis points. To cut regular steel, the explosive should be about 1/4-inch thick; for high carbon steel.
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