Blackburn also has a stainless cage called Chicane and are what I use. Have yet to have one fail and they are about half the price of a King Cage. Necessity is the mother of invention, my friend. Try your idea and see what happens. The epoxy I use for structural repairs like this is JB Weld. Do the repair off the bike and use loss of epoxy and rough up the nail so the glue gets a good grip.