There are a good number of reasons why copper is preferably used to construct One, because of its excellent anti-corrosive properties which can defy and hold out harsh and changing weather conditions especially when distilling outdoors.
Cut legs A & rails B, C to size. Cut hand hole & mortises for hinges in back rail. Cut half lap joints in legs & rails. Lay assembly on bench & clamp swing-leg assemblies on top in open position. Make sure top edges & outside faces of swing-leg rails