Hi Tony I've been using hingepoints for years as you know. I wash all my hinges first with denatured alcohol. I rough up the surface on the hinge point with sandpaper. I apply vaseline with a toothpick on the hinge joints. Apply epoxy with a tootpick in the drilled hole and insert hinge. Any glue that oozes out is cleaned with deantured alcohol. I've never lost a hinge in over 30 yrs.
Later,
Fred