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As you can see, I've changed my original plan of having the TEC and heat sink on the side and have put it on the back instead, it is a lot more balanced and lets me use a bigger heat sink. By mounting the TEC on the inside of the case and the heat sink on the outside I'm using the case to get rid of the heat as well. At 11v 8A the 55w TEC keeps the case and heat sink about 2 to 3 degrees above ambient, and the cold finger around 28 degrees below. Is this alright?
I'm hoping to make another cold finger when I'm able to get some copper plate.
The camera turned out to be around 8mm to thick for the case to close, but by sanding 3mm off the front of the camera and milling 2mm off the back of the case where the TEC goes, I got the gap down to 3mm which was taken up by the rubber gasket I made.
It actually worked out really well, because when I screw the lid on tight the rubber is compressed just enough to push the camera, cold finger, TEC, and case together tightly.
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