I knew as soon as we got our first baby chicks from the hatchery that we were going to need an incubator. I do not do anything without research and a lot of thought. My verdict on an incubator was to build my own, and then expand if necessary.
For the controls, I chose a kit from Incubator Warehouse. The Incukit is designed to be attached to a container of your choice. I have frequently seen them used on a variety of coolers. The kit is a very neat set of stacked components, a digital thermostat, ceramic heaters, and a circulating fan. The unit also comes with hardware to attach to your cooler. You can find the info on the Incukits here: Incubator Warehouse- Incukits
I chose a thick walled cooler from walmart as our cabinet. I had to modify the lid to accept the Incukit, but it was under $10 and a great size to get started.
The layout of the inside of our incubator is just big enough to hold a tray for water to add humidity, and an egg tray that will hold 30 eggs. I use 4 tin cans (empty) to rest the egg tray on to set it at a 45 degree angle. to turn the eggs you just have to alternate sides resting in the up position on the cans. This allows for you to turn the 30 eggs at one time.
I label my eggs with the date and put a mark to give the egg an identifiable position. If you have eggs put in at different times, you can leave the egg tray in one spot and rotate each egg. This will allow you to stop turning some of the eggs , but not the entire tray.
Here I have a partial tray with 2 rows nestled onto the large tray , this will allow me to just turn the 2 rows independently if needed.
I will be collecting eggs over several days t o fill the incubator. I have 3 hens laying, so it will take a few days. Now we just play Mother Hen for 21 days and wait for them to start hatching.