Here is my incubator that I built. Several people have asked about pics of it from the inside. The turner was made from 2x4s that I ripped on the tablesaw. The case was made form a sheet of 25 dollars plywood. The thermostst and heater element is from GQF and was wired to a space heater fan.
http://www.diyseattle.com/2011/04/04/quail-hatching/
http://www.diyseattle.com/2011/04/04/quail-hatching/