I am wondering if you are still pleased over all with your homemade incubators. Have they consistantly performed as you expected them too? Have you made any changes? What has been your hatch rate? I am curious because although my incubator worked like a charm my last hatch was a 100% failure. After 25 days we cracked open the eggs and out of 15 eggs 14 of them were just rotten eggs and 1 was a partially formed chick. When the eggs arrive by mail five of them were damaged/broken leaving only the 15 which obviously had sustained too much damage to be viable. I will be trying another hatch with eggs from Cynthia's Blue Orpingtons and Ameraucanas starting sometime next week. I plan to add a heat sink and change my 25 watt bulb to a 40 watt for a few days and see how consistant the humidity holds. Last time my humidity jumped around alot and I never had to add water to the incubator at any time until boosting it to 70% the last 3 days. The last eggs were welsummers and just too dark to see anything when candling. Had I been able to candle I would have known by day 10 to give it up. Any response would be appreciated.