So I lined the forge with the IRC. Night and day differene there is still a hot spot cross from the burner, from what I've read this is almost impossible to remedy it is a trait that an atmospheric burner has. But the forge now has an almost even Orange glow front to back (about the first 1/2" or so in front looks cooler, I'm sure this is due to the open chamber constantly cooling that area?). I heated a 3/4" cold chisel in the moderately heated forge about 2-3 min to a bright Orange color in about 2-3 more min! I have no way to check temp but believe I should come close to Forge welding temp with this setup? This was a fun and relitivly cheap project. All toll with the little bits I had to buy I am into the forge without regulator for $50-60 and that is lined with the Metrocote from Wayne Coe including the shipping. I had all the steel from scrounging and the Regulator, if I include the regulator no more than $80. It was a fun project.