Since we are in the off-season, it's time to think of more projects we could add to the list. I assume most guys here tend to have a number of vehicles such as tractors and skidsteers, and like myself, generate copious amounts of waste oil every year. A number of the OWB manufacturers offer a fuel oil gun (or LP) as backup and a starting aid. My wheels got turning thinking why not fabricate a new door for a wood gasser, bolt a burner modified to run waste oil onto it, and use the contraption to burn up the 50+ gallons of waste oil I have every year? I could probably scrounge up a lot more by taking a short drive around the farm neighborhood. Used fuel oil furnaces are a dime a dozen. Here is a decent forum on modifying a standard Beckett gun to run waste oil: http://www.garagejournal.com/forum/showthread.php?t=24280 One wonders if you'd have to mount the burner to the upper chamber, or the lower and customize the area that the refractory sits. My guess is the lower chamber, as there may not be enough surface area in the upper to absorb the BTU's? I guess there isn't that much more area in a small furnace, and the heat flux into a water jacketed area would have to be significantly higher per square foot. It would be easier to just install the modified gun into the original furnace if you were starting from scratch, but many of us are heating multiple buildings with in-floor, and no one relishes the idea of another chimney. Controls, flue condensation, and a host of other unkowns would need to be tackled. Thoughts?