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  1. CRT1

    Post machine heat treat of Invar 36

    I designed two optical mounts out of Invar 36 and had them machined with no heat treating. They are basically 1/2" thick plates 4" x 6" with a bunch of pockets that each hold a 3" diam mirror. After aligning at room temp, we lose alignment when we run the assembly down to operating temp of...

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