Rocket stove design , All metal ,stainless steel assembly of combustion chamber and fuel port in a 45 degree angle at the side. Primary air enters at both fuel port and lower bottom of combustion chamber just below the grate. A hinged closure below the combustion chamber functions both as primary air control and ash catch. Preheated secondary enters from fuel port and at bottom of outer cylinder and exits at upper part of inner tube or combustion chamber for secondary firing of gasified smoke.
(Flat bottom/Round bottom)