I've been thinking of building a wood framed forge for some time now. After seeing the recent thread by Ridgewayforge, I feel motivated to get it done. I am going to make a firepot about the size of my two hands cupped together, maybe 8" across the top, and about 4" deep. I never use anything larger than 3/8" anymore, a lot of 1/4" stock.....gotta love arthritis! I was thinking about a fireclay mortar between the firepot and wood frame. I don't know how many inches of clay between the two would be enough to keep the wood from burning. I would like to use the minimum, so it will be as lightweight as possible. Any and all opinion and wisdom would be appreciated.