At 10:51 AM 9/23/2009, J. Forster wrote... >Monsterously thick will NOT do it. All that does is increase the heat >capacity of the HS, not it's ultimate thermal resistance (W/deg). > >You need surface area... You need both. A 10 m x 10 m piece of aluminum foil won't do much, either, despite having a very large surface area.