Good morning everybody ;-)
i will post some Pictures from me also her...but excuse me for the chaos in my "Workshop" ;-)
on this pics u see the "joiner boxes"
To make it, is really easy.
U take the joiner...put some wax or butter on it...than Baking paper.
Then put one coating with glass fiber and then a glass hose like this
GLASFASERSCHLAUCH 55MM/10LFM*R&G
Now hang it up and weight it.
U will get a really good joiner box with extremly small margin...but be carefull the joiner must be also accurate parallel. Our Joiner is from
Carbon-Vertrieb - Carbon-Fasern * Carbon-Technik * Carbon-Modellbau is near from us and they make a good Price for this Kind of joiner...500 x 60 x 15 mm in full CFK straight.
The Size of the Joiner ist the Maximum for getting a V-Form from 1,5 degree in this wing