I don't mean to be either but, not all CA is alike. Did you ever notice that medium and thick CA is also called "Gap Filling"?

After you have chopped out an old hinge, you will no longer have a tight fit. Sure, it might seem tight but it is only grabbing in some areas, it's not a clean, surface to surface union, which is what thin CA needs to work properly. Thin CA won't do diddly in even the smallest of gaps. Combine that with the fact that the pores have been sealed, and you're an accident waiting to happen.