You might be happier with the penny stove, burning alcohol, or a
more designed for wood type stove if you wanna burn wood.

A recent project in the make your own gear section here had a pretty sweet looking double wall woodstove made from cans.

There's no point in putting the penny stove *inside* the volcano, as it works very well with just the little u shaped pot support made out of coat hangers and a hunk of aluminum foil or turkey pan for a windscreen.