so347
What the problem is ! they are built with and interlocking and bridge type construction with hot glue and the expansion and contraction of the wood causes the surface bond of the hot glue to let loose. Eather that or the vibration of the moter when attemting to fly will cause failure. Every thing is built light and depends on stuctural braceing for strength, One failure and you are back to square ONE. Better safe than sorry[&o]
Larry