I've also started down the 3D printing path for the Auto Climate R&D. This is a little Fiesta AC Arm that was available on Thingiverse that I tried out. It doesn't match any of the Mk6 parts so it's probably a Mk7. Either the Mk7 is different, or it printed slightly out of scale, as the spline that fits over the actuator spindle was about 1mm too big. But it's a good start. Now I just need to spend some time in front of FreeCAD beginners videos so I can start drawing things up.
Lukeyson