Hello everyone, I have been wanting to do this build for quite some time now, Just today I obtained the most important part of the build, and I am super excited now. What I have to work with is a 325 gallon Propane tank that was built in 1955, It measures 41 inches in diameter and is 73 inches in length. The greatest part is the thickness, the plate reads that the shell which is the cylindrical part of the tank is .343 (11/32) way thicker than I had expected, The Heads .2301. This thing is heavy duty. My Idea is to make it a trailer mounted smoker to pull behind my truck. I have been gathering some ideas over the years from some commercial built ones bubba grills and Horizon smokers, so I may borrow some of the ideas. I would like to have a vertical box above the firebox as I saw on a bubba grill model, it held like 6 of those foil pans or I think they call it a rib box too. Well now that I got this tank I can plan from here, stay tuned, I hope to be smoking in the near future. Any advise from anyone that has cut into a propane tank would be greatly appreciated. I have read the idea about filling the tank with water, I though maybe evacuating the tank with a vacumme pump.