An excellent adhesive for joining bodywork that is very strong is acrylic nail filler found in the fingernail polish area , it comes with a liquid and a powder you dip the brush into the liquid then into the powder then brush onto the joint . it is very strong and dries pretty fast like in five to ten minutes . I always had problems with styrene filler ,epoxies, and superglues but this stuff sticks and doesn't break . I don't remember who brought this to my attention but it was someone on this board .