b is affixed by convenient means not shown to a source not shown of oxygen as is conventional typically this connection merely comprises a valve arrangement connected to an oxygen hose regulator and cylinder or manifold so that oxygen may flow through gas flow passages a b as the specific hookup is deemed to be conventional and already known in the art and further since it does not form a specific part of the present invention a detailed description thereof is deemed unnecessary in any event and with oxyyen flowing in direction c through gas flow passages a b toward the discharge end of the torch or lance as defined by ends 14 34 of casings a b the lance or torch is ignited by conventionally known means once ignited combustion is self supporting through the supply of oxygen so that a flame f is directed axially outward at the discharge end of the torch or lance onto the material being cut or otherwise processed this flame acts to perform the boring cutting burning and the like action desired and during such action the entire lance structure is consumed from the discharge end toward the inlet end according to the concepts of the subject invention oxygen flowing.