i have finally started construction on smoker prototype number one , i say number one because i want to build a more heavy duty one later when i source the materials , but the pipe for this one i picked up for 10 bucks and when i saw it i thought that is just asking to be made into a smoker . the oven will only be 36 inch x 20 inch x 1/8 inch thick , but it will be a big step up from the weber kettle . i have some 1/4 plate that i bought for another project, but that has slipped down my list of priorities and i will use that for the fire box , i saw an old dissused boiler the other day, right in the town where i live it was used in an old ice works many years ago it would make a massive smoker, but they won't part with it , i will take a few pics of it one day and post them here so you can see it.