Just curious.........Has anyone ever used or heard of using tungsten? Okay....one other curiosity. Has anyone mixed metal type with success? Say, Kanthal and SS, or Nickel and Stainless. I want to make a 2 stage heating coil. The thought is that one wire would heat up much faster than the other. The idea being to decrease the heat up time in the coils. Pre-heat the juice, if you will.