Twig Burning Camp and Emergency Stove

Twig burning camp and emergency stove..Will boil water as fast as any propane stove available anywhere and incredibly efficient. The smaller the twigs the better. Its a rocket stove using a stove pipe reducer with a 4" inlet and 3" outlet. The outlet needs to be a good foot long. Once the fire is started it draws the air and creates a vacuum and will burn so hot it's nearly smokeless.