In certain situations you would actually need to install the hinges in this fashion, one half at a time. If you have a built up stabs, Kadet senior, gliders, and old time airplanes, and cut a slot for the hinge, you want to make sure that the hinge is installed half way and not push all the way through the stick. Use thin CA to glue the hinge in. Being from old school flying and building, I would then pin in all of my control surfaces hinges. I would drill a 1/16 " hole through the hinge and control surface, dip a flat style tooth pick in some carpenters glue and shove it through the hole, let it dry, and trim it off using finger nail clippers.