Disclosed is an assembly for use in an herb vaporizer. The assembly includes acasing having atleast one casing air passageway. The assembly also includes a first grindingelement partiallydefining a grinding chamber and a second grinding element, opposed to saidfirst grindingelement, further defining the grinding chamber and rotatably mounted such thatcontents of thegrinding chamber are agitated by rotation of the second grinding element. Theassembly alsoincludes a heater within the casing operatively associated with the grindingchamber, and beingelectrically coupled to a threaded connector providing an electric connectionfrom a battery unit.The threaded connector projects from the casing for mating with an externalbattery unit.