Just been catching up on this. Hadn't even thought about this idea.
One design thought I've got bouncing around is that the rear screen is essentially redundant these days as the camera is always tethered to my laptop, so is there any sensing logic in the camera that makes it non-functional if the screen isn't there?
What I'm thinking is that if I remove the screen then a large hole suddenly appears in the back of the camera, and I can get away with a smaller cold finger, just a U-shape from the sensor and bending where necessary to present itself at the screen-free aperture at the rear. The TEC and heatsink/fan can then be attached there.
Possibly, if required, it should be possible to mount the screen away from the back, right angles or something or as you say, remove it altogether. That really simplifies access and fits better with my copper slab idea. I going to HAVE to find an 1100D now. Hobby finances are steadily recovering so maybe soon...
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