Building bator ,(water jars)?

[giasmom]

I am in the process of building Gopher-boys bator. Can someone tell me the purpose for the jar of water ? Next, how much tilt does the egg box need to be able to have ? Thanks in advance for any and all help with this !

 

[sben451]

The closed jar of water is a heat sink--it will help stabilize the temperature. It holds the heat better than the air in the bator does, and it helps prevent large temperature swings.
Nice to see someone else from AL--I'm near Anniston.