Wayne, about your stove...it looks like you've coupled a commercial
used oil burner with a piece of 20" pipe and then done a heat
exchanger. I've been struggling for 2 years (just piddlin' now and
then) to make a homemade waste oil burner using a babington burner and
had no real success. Where did you get your commercial unit (assuming
I'm correct that that is what it is), how much did it cost, how well
does it work, what maintenance do you have to do on it, and how hard
was it to plumb the oil and power to it?

--HC