Hi all, not building a bipe but need aluminum fuselage stringers. Anyone got a source? I'm in the NW. What cross section, and size is generally found on biplanes? Assuming rectangular extrusion or rolled sheet metal attached with pop rivets or safety wire. There are three of us that need them so we can pay some shipping. Been years since I built a biplane, can't remember. Reviews of the Aircraft Spruce stringers were not good.