I was considering making my own barrel. I could conceivable easily make a barrel, that's not exactly a barrel. The only difference I could see is there's no bulge in the middle, which from what I can understand, is not a big deal since the bulge is primarily to make it easier to rotate when moving it. By cutting several straight staves, I could angle the sides all at 15ish degrees to make one large 24 sided wooden cylinder. Think this would work if I could somehow seal the inside? I could probably torch the inside myself too, id just have to do more research on that.