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One big advantage of the tight fit of the copper plate behind the 450D sensor is strain relief and stiffening of the whole TEC/heat sink/fan mount which has much less chance of putting torque on the sensor assembly, the downside is the possible direct transmission of fan vibration to the sensor assembly. The fix for that is to isolate the fan on silicon pads (which come with some quality fans), choose mag lev fans where possible, and use nylon screws and spacers when attaching the finger to the sensor assembly frame.
Last edited by glend; 23-09-2015 at 07:50 AM.
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