I use the Great Planes pinned hinges, and I locate them in the slot, and drill a hole for insertion of a round toothpick. I moisten the pick, generally by just having several in my mouth, and simply invert the bottle and insert the pick (in a close-fitting hole I drill in the tip for just this reason) to pick up a bit of glue, and insert through the hinge and hole. If you keep everything snug, the glue only expands into the hinge slot, and there's no glue to clean off the outside. Trim flush when it's dry and I haven't had one fail yet.