ORIGINAL: CGRetired
with the proper hinge insertion depth (equal on each side), pinned through each surface to hold them in place, with the gap is properly set (of course, set the gap before pinning them in place).
Close, but no cigar.
You do NOT pin the hinges in place.
IF the surface you're hinging (Let's say elevator to stab) is built-up, there is a chance that the hinge can go too far into one side or the other, so a pin in the
CENTER will hold the alignment so it can't go too deep into the stab or the elevator.
Also worth noting is that if both surfaces are solid, and you didn't cut the slots ridiculously deep, the slots themselves will keep the hinges from going too deep and the pin is not necessary.
But please. read the "How-To" for the rest of the instructions. It's written in very clear, easy-to-understand wording with illustrations.
[link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=55]How To Install CA Hinges[/link]