stretchie_ wrote:I'm making another one soon but this time a horizontal reverse flow one

That sounds quite exciting. Will that involve welding? What about the firebox, will that be offset? If I could weld I would be very tempted to make a huge lidded grill. In fact, please can you start a post about this so I don't threadjack the OP?

To the OP, wherever you source your drum from, if you can, get an unlined one that was used for food (mine was a coconut oil drum). Oh, and one tip, something I overlooked that thankfully someone pointed out to me before I burnt mine out, if you have a removable lid (easier than cutting one from a sealed drum), it will have a rubber seal not only around the rim of the lid, but in the bung holes too. I couldn't get my smaller cap off to get that seal out, but removed the others. Good luck and have fun!