I wanted to make a really cost effective incubator that was reliable and worked properly.
I needed a design that was low cost, trouble free and easy to use.
This is what he incubator ended up looking like on completion.

The incubator I created was big enough to hold at least 15 eggs and maintain eggs at a temperature of 102 F which suited my chicken eggs. Its is however fully adjustable to accomodate other egg types.
The important question is how much does it cost to make your own incubator in relation to buying a new one.
In the UK its hard to get hold of a cheap really basic model for under £50.00.
To make one can cost upwards of £12.00 depending on whether you buy new or recycle.
The main components needed to make your own incubator are:
- Thermostat - This is probably the most important and expensive component of the incubator.
- Insulated box - I used a nice clean new one with windows in it, or you can find an old cool box or fish box etc
- Bulb and holder - Simply a light bulb to provide heat with holder for good connection.
- Power supply - You need 12 volts direct current to power the thermostat I used. That means a plug in adaptor is requires or second best is a 12 volt battery with charger.
- Water container - This can be made up of a small egg cup sized container for holding water to create humidity.
- Thermometer/hygrometer - An accurate thermometer is essential to ensure the thermostat is set at the correct temperature. The hygrometer measures humidity which can be an important factor in a good hatch.