Its one of those things..by filling it full of water its a sure guarantee that you won't ......and like dot com (FRANK) said make a couple of spot cuts into the lower sides with a cutting wheel to drain it down enough.....don't try to plasma cut against level of water....Silent_hunter wrote:The 1947 tank does not have a drain plug, but all the propane should be out. I will probably run my quad exhaust into it, just to make sure.