How to make a homemade, heated chicken waterer

Marvin Bartel wrote in this week to share his ingenious solution to the problem of frozen chicken waterers.  His description and photos were so great, I've reproduced the entire email here with just a few modifications:

Here in Northern Indiana it gets cold. I have a three hens  in a small insulated shed.  They use one of your drinkers.  So far this year it has been down to  7 degrees F outside and down to 15 F in the shed.

Being a potter and expecting cold weather, I made a stoneware pot shown here under the drinker bucket.  It contains a 25 watt lightbulb controlled by a thermostat.  The water bucket has  wire and spring to secure it so it cannot fall off.

The yellow plug thermostat is designed to turn on heat tape to keep pipes from freezing.  It is permanently set to switch on at 38 and off at 50.  Search for: Easy Heat #EH-38 Auto Thermostat.  Amazon has them at $12.88 + shipping.

This is the base with the stoneware cover removed.  Inside the closed container it reached 50 degrees too soon and turned the bulb off before it produced enough heat  to keep the drinker from freezing.  By adding an inch of insulation between the bulb and the thermostat, the bulb stays on long enough to keep the drinker from freezing (thus far). The insulation is alumina-silica fiber insulation used in pottery kilns and space shuttles. Other fireproof insulation would probably work. The bulb uses a standard porcelain fixture.

The closed warmer without the water container on top of it.  Any potter can make these.  A tinsmith could also make it from sheet metal.

The drinker is mounted with a rubber o-ring seal. Inside the water pail it has a brass nut (sold to fit the little pipe under a lamp sockets).

We're always thrilled to see unique homemade chicken waterers like this one.  Marvin's base is very elegant because he's a potter, but I suspect less crafty folks could make something equally utilitarian with even less effort.  Or contact Marvin and commission him to make you a unique art base!