Fig 5. 10-20x stereozoom microscope images of components from new Hermes THC cartridge.

a) battery contact removed and metal end cap wall sawed off, showing filament embedded in ceramic, housed in a clear rubbery envelope inside a metal insert. b) heating element removed, showing rubbery envelope. c) ceramic chipped away to reveal square geometry of filament turns. d) filament removed from ceramic, showing brazed wire lead. e) battery contact with white, rubbery gasket. f) view towards heating element with battery contact removed, showing clear polymer sheath around one wire lead.