Mainebiz has published an article about the Portland Barrel Co. and its owner Ed Lutjens.
Lutjens works alone, planing staves so they fit together tightly, sculpting the staves’ inside and shearing off some wood outside so they’ll form a round barrel when set into hoops. He starts from the top of the barrel, placing the staves, which are of different widths, inside a metal hoop that he also hand makes. No glue is involved, so the sides of the staves need to be planed flat and fitted carefully.