Also, right after you've run the CA along all the hinges, it's a good idea to flex the surface. Push it together as you flex because you don't want to pull on the hinges, just to establish where they're going to bend. I wait a minute or two just for the heck of it.

I got no idea why this does what it does, but MinnFlyer mentioned it was good to do so I tried it. It does seem to help a couple of things. The hinges won't be stiff like some can be. And they seem to last longer. Since starting to do it, every hinge I've had the good/bad fortune to autopsy has been supple and none showed any cracking. I've only ever had one instance of CA hinges failing, however. They looked cheap when I installed them. Looked like shiny vinyl. So who knows for sure.