Making a rocket stove

I was intrigued by the concept of a rocket stove. To simply make a stove for heating food that is more efficient than cooking over an open fire; and to make it out of old cans, using only tin snips and a pop-rivet gun
I started with an old tin bid and some empty cans
Cut a hole in the tin, to fit the can in.
Spliced two cans together to make an elbow
Put the cans in the bin
Flanged the tins to the bin
Filled it with wood ash.Stuck a lid on with supports for a pan
Then lit it!