Back into it.... for better or for worse, Brent.
The copper is hard against the back of the sensor with a smearing of heat paste. The back of the copper has a layer of duct tape to tightly fill the gap between the copper and PCB.
The sensor pins are soldered to the circuit board on the 1000D, 450D and 500D, which makes for easy conversion. And the bavk of the sensor is flat and bonded to the sensor which makes for even cooling, unlike the sensor mounting frames in later Canons. Very convenient for 1.2mm copper sheet.
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