This ^^^ A cooler type of incubator is the way to go for a few clutches per year...
Incubating bp eggs is a very simple process...don't make it any harder than it should be. All you need are heat (and a way to control it) and humidity. Heat tape and a thermostat takes care of one, substrate the other. A cooler is ideal for this...
Temp controls
Heat tape...
Routing the wires...
And eventually you get this...
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