I make one and used it last summer when it got cold after thunder storms with hail came to visit while we were camping at about 9,000'. It worked really well and kept radiating heat after the burner was turned off. It was a dryer heat than the catalytic heater, which does put moisture into the trailer. We were pleased with it. I believe I used 4 pots and less nuts & washers than the original terracotta pot candle heater had.
Remember to keep from waking up dead from carbon monoxide affixation, you have to leave something opened a little (a top vent or window or both) so some fresh air can come in. Once the burner is off, close the venting to keep the heat in longer.
It did warm up the Scamp quickly and then radiated heat for some time after the burner was off. Very happy & it was a nice dry heat.
A Warning Addition to the Post:
Dutchman wrote: "Many years ago I tried this aboard my sailboat. After the pot got good and hot it suddenly cracked and redhot pieces fell on deck and cushions. Mad scramble with water, and much hissing, before I got the pieces cool enough to pick up."
The thought about the pots cracking has entered my mind.......something to consider. I have only used it twice so far. Not sure if using only a very low flame would keep it from cracking or not??? The inventor does warn people about making one of his gadgets, the cracking and pieces flying maybe why. May just be too Chancy to Use.
From the description, it seems to have not only cracked, but explode somewhat as well. It is a good heads up. This might not be such a good idea after all.
Someone else said burning of propane in any way would make the same amount of moisture. As for this burning of propane making the same amount of moisture, I had wonder about moisture from a flame vs moisture from catalytic burning of fuel. I figured with the catalytic burning, it was making more moisture. Wouldn't know for sure.
All Things to Consider before doing something like this.
Edited by DesertHawk, 02 June 2011 - 10:15 AM.