Hey Guys, Thanks for all the great info. I am starting up my first trailer smoker build and will need some assistance. I am from Australia and smoking meats isn't really a big thing here but I went to the USA and now have a taste for it. So here is the newest member of the family an old gas tank which measures 1.5m (60inch) x 3m (118inches). I bought the tank but I haven't picked it up yet. I also just bought a makita metal cutting circular saw for the job. Just a quick question do you all insulate your FB or how thick steel do you use? 1/4 or 1/2inch?