Pete, your advice is well taken and good advice. I may be wrong, but I believe that Hempburn was talking about cutting a wooden barrel since he referenced cutting bands and removing screws. When I am cutting thinner metal such as a barrel, I prefer using a SAWZall with a metal cutting blade simply beause I have one and interchanging from wood to metal blades is quick. It is a slower cut than a cocrete saw though, but few people own concrete saws unless they are in the business and it is not economical to rent a concrete saw for a small project.<quoted text>BE CAREFUL!! A friend of mine got his FACE blown off last year, while attempting to cut the top off a metal barrell. Suggest filling the barrell with water beore cutting on it. Also, a concrete saw is an amazing tool when cutting metal or plastic, and is MUCH faster than a torch.
A skill saw with a metal cutting carbide blade will work well also. I rarely need to cut anything that would require a torch. If cutting sheet metal such as metal roofing, one can use a skill saw with a normal wood cutting blade installed on the saw backwards.
Your advice would also apply to anyone trying to weld an old automobile gas tank. I know of one that exploded that had been empty for over 20 years.