I need some ideas, I need to rebuild my forge for a couple reasons, first its old and wore out. next, I need to for some things I now do. what I am wanting to come up with is something like a gas forge but coal. what i have now is about 12" square, that tapers down about 12" deep. it is a bottom blast. What I need is one that is about 18" long, that will heat evenly the entire length. so i was thinking about some kind of difuser so there is no cold spots. I know I could use gas, but I like coal. I need it deep also as I will be doing welding mostly. The next problem I can see is I use a side draft hood, I can see my shop will be smokey if it is that long. I'M not sure how to fix that problem. maybe I can figure that out as I go. any ideas would be great. bottom blast, side blast? I have been doing my thing for a while now, so I am kinda out of the loop so to speak, on forge ideas, and such. I am in a heated shop, and work full time in it. I say this because if there is any ideas of water cooled somethings it would be OK. thanks for your alls time....Jeff