I am building my own incubator. it has been running for the past week and at best I have had a three day period that would not have killed eggs. I am once again up to three days so I might set a new record lol. No way woudl I be ordering eggs and then trying to get an incubator set up. way to many mistakes to make. placing it int he wrong location. I have had mine over heat because tha sun was shining on it. cool down because the place I have it drops to 60 degrees at night. and drop all the way to 88 degrees like clock work for the first three 24 hour periods until I realized the top was warping jsut as it got to a nice 99.5 to 100 degrees. I think I have theoretically killed about 12 dozen eggs so far. something new to figure out every day but until this incubator runs for a full 23 days without messing up I would not dream of putting an egg in it. And to top it off just as this design is showing some promise of working. I plan to completely change it. Oh by the way I am expecting my first egg about a year from now if all goes well. at least my first serious eggs. I do plan to hatch a few others between now and then.