Afterburner for Ammo Can Stove - creating an efficient secondary burn

A design to upgrade most ammo can stoves to increase fuel efficiency by encouraging a secondary combustion within the burn chamber. This upgrade should be an easy retro fit to most stoves. The level of difficulty is about one six-pack for the AfterBurner.
Links to a couple of good wood-gas stoves:
• Video
• Wood gas camp stove "h...
Materials required:
1/8 inch steel pop rivets
steel sheet
Tools required:
ruler
felt tip pen
metal snips
drill
1/8 inch drill bit
#ammocanstove #afterburner