patrick mitchel wrote:

Light miniature aircraft(LMA) in florida used rivet bonded alum square tube
in the homebuilt aircraft. Dick Schreder used bonded alum with foam ribs in
several of his kitted sailplanes. Bede used bonded wing modules (glass) that
slid over a tubular alum spar. Pat



Sure, but none of that really means anything unless you know WHY.