RE: Sig Kougar Build
In each case the wing mounting blocks broke away from the fuselage and the 1/4-20 nylon bolts were not damaged. Twice the glue was epoxy and twice the glue was Gorilla glue. Broke one airplane twice. Three were bang, bang landings and one was a crash. On all occasions the fuselage suffered long front to back cracks and the chin block came off. If the fuselage was as robust as the wing more airplanes would not be needed until a flyaway occurred.
However I decided to cross drill 1/16 holes in the 1/4-20 bolts and see what happens next.
Bill