Thanks Thermal Mass. I got to see your thread while following v-wiz's build thread. I am doing a WFO too as part of this project. Right now I'm all over the place, keep second guessing myself and changing my design. Unlike you, my winters are mild and shouldn't be too much of an issue. Its actually the hot ass summers that put a damper on things....and if I don't get the first coarse down soon, this thing won't get finished until next year.
Dwfisk, That is an excellent idea. If I set a steel plate down with a piece of CF Board on top of it and then enclose with refractory morter and finish it off with a nice piece of granite, that would make for a nice work surface too! Brilliant.