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    {"command":"solid.sphere","params":{"center":[60,0.0,10],"radius":10,"body_name":"Copper specimen"}},
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    {"command":"appearance.assign","params":{"bodies":["Copper specimen"],"appearance":"Copper - Clean PBR"}},
    {"command":"solid.sphere","params":{"center":[0,30.0,10],"radius":10,"body_name":"ABS Plastic specimen"}},
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}