On series IV falcos all the control surfaces were made of aluminium.We decided to follow the development of the falco and so there is no doubt about making the rudder in the same way.
We have the original jigs and so also the jig for the rudder spar.These jigs are quite simple.

 

This curve part is needed to permit the rudder to be hinged.

The elevator's spar is done and is curved too.The jigs are really very useful.

This curve part is needed to permit the rudder to be hinged.

Here's how the ribs jigs work.

We used the jigs for the rudder ribs and we made these ribs.