The non fun part. I don't know why I don't like hinging surfaces, it's not really hard.. Anyway, I use a hinge centering tool like most of us do. I measure and mark where the hinges will go, and get busy with a xacto. Then I fold the hinges in half hard forming a crease, several times. Then I install the hinges as seen in the pics. I then check the surface to make sure that the centering of the hinge cuts wasn't high or low. Which causes warps in control surfaces and adds a bit of drag if the surface is high or low. Try hard to get them perfectly centered. Even if you put pressure on the surface to keep the hinge in place while the ca dries. I install spacers to keep the ailerons/rudder and elevators (not on this one as it has no elevators), but to keep them in the right spot. So the ailerons don't stick out past the wing tips and such. And also spacers to keep a little gap at the hinge so that they don't bind. Then I slowly wick super thin CA in there. Work the surface back and forth many times to keep it from binding while the CA dries.. Pics are kind of self explanatory..