Model airplane hinges - for ailerons and rudders. What to do when the EPP is torn by the factory mount of the rudder or aileron !? This is exactly the case, you can insert it into another working or tear-off surface.
We have three possibilities:
the two halves are connected with a piece of filament 1,75mm. Use for transverse installation in the wing.
In video how it works.
https://youtu.be/Iwyv6IO6eHA
https://youtu.be/vJs2Yb734cI
on request, if suddenly there is not enough, I will give all the sources.