I revisited the thought that I could make the controls movable. This would require a decent brand of wire. I started thumbing thru our archives at www.kartonbau.de. I knew there was something…
…and found it. There is a supplier for model ship accessories and this one carries an amazing amount of stuff for this project:
The website is … well … old fashioned but they carry machine-laid rope made from stainless steel. These ropes are made of 7×7 = 49 wires and start at an diameter of 0,27mm !!!
This is one step further into making the control surfaces movable.