I broke my headphone connector on my Bose Triports. The wire near the connector frayed. Anyway, I got a replacement plug. I soldered it nicely and injected the whole thing with epoxy to ensure the wire doesn't tug on the unit. How long will this wad of epoxy take to settle? It says 'usable in 12 hours' but I would assume that's for a thin coat between 2 plastics.