[avandonk]

h0ughy it is a heatpipe CPU cooler. It easily handles the heat load of the Peltier or TEC. In fact the Cu plate in contact with the TEC is barely (less than finger temp.) warm. The original Al heatsink was very hot (burnies to finger!) near the TEC.

Bassnut I have no condensation problems as the heat exchanger inside the fridge has a fan blowing on to the camera. The heat exchanger is the coldest object inside the fridge and any condensation occurs there. In fact I have very quickly removed the fridge when it was -12C inside and all metal objects outside were dripping with condensation and the outside of the 5DH was bone dry.

This is fridge mark 2 or 3. I will next modify the power supply to keep the fridge at a constant temperature as TEC's don't like being switched on and off continuously such as a simple thermostat would produce. Temperature controlled PWM would be far better and have far less hysteresis or sawtoothing.. This of course means darks will actually be at the temperature of the lights.

Netwolf I have no intention of making them en masse. I will make all details available though.

Bert