I've used the super glue to effect small repairs, and some not-so-small cracks, to really great results. But as an overall sealer it seems excessive. Reinforcing weak areas seems like an excellent idea as well if they can be identified. For overall protection against oil penetration a couple coats of thinned spar varnish works just fine. I have stocks that I've sealed that way years ago that simply show new finish when the oil is wiped off. BTW BLO will not provide that protection against oil. AFA BLO is concerned the advice and data offered by Newell in his fine book, and by marshgurl (a noted antique restorer) here pretty much puts BLO in the BLOW category for anything.
Or course, use whatever you like. It's your gun
