I'm with those who mentioned LocTite. There are several "reinforced" superglues on the market, with ingredients added to increase toughness. Look for the ENHANCED superglue, not just gel or regular.
LocTite may be the best of them, though recently I have bought a couple bottles of this new (to me) stuff called DAP RapidFuse at Lowe's, and that's been great.
TB II AND III have worked great for me, too, but by that stage I'm usually super eager to get finishing the bow and don't want to wait that long.