A comment from Allison made me think of a wind screen that I came up with sometime ago. It was made out of the skin of three soda cans wrapped around the pot , protruding a couple inches below its base. Worked really well but only at the lowest setting, IE good economy but slow. So I thought of using the Caldera cone that way. Have not tested if it does save any fuel compared to the traditional wind screen but I think that it will. Last night experimenting on my bench top gas stove , I worked out that on a low and medium setting ( using the smallest burner) I get the same boil time with my 550 ml pot as I do with the wider 900 ml pot. When the flame (on high) creeps up the sides of the smaller pot the larger boils faster, about 25% in my test.
In other words if the flame is narrower than the pot, I think that you end up using about the same amount of gas.
I used the same principle with this set up.
Two ways of using it,
1) wrapped around the pot , use a low to medium setting with that.
2) traditional way, using two pegs (or a few stones) to keep it close and in shape. By varying the distance to the pot you can have a slow (and likely economical ) burn , or as fast as the stove allows.
Warning : don't join the cone, keep a good gap to let some heat escape. (or you may blow up the canister)
With either you need to do the touch test. If you can keep your hand on the canister (the top of it) it is safe .
Why would I use this rather than a foldable version ?
Because the TiTri version allows for the occasional use of wood and I think by reflecting some heat to the canister maybe it can be used in below freezing temperatures (?)
Must stress common sense for this one…..
Franco
