I am building an incubator for rearing queens and there isn't a lot of information out there. A lot of research this is my gang plan. I built it out of 3/4 inch Birch plywood 23 inches long X 16 inches tall x 15 inches wide and sealed inside and out with polypropylene. I installed a fan forced heater (100 watt) with digital thermostat from Incubator warehouse.com The door has 2 panes of glass making a 5/8 inch gap to be an insulator. I plugged it up and set the thermostat at 92.3 degrees F and it heated up to that point and held. I am going to put 1/2 inch foil backed insulation in tomorrow. I will have a pan of water in the bottom with a vent to the outside to regulate the humidity which has to be 80-90%. I'm going to try and add some pictures.