You could try to kreg jig it maybe. Depends entirely on how the piece is situated.
Also for future reference, resin alone won't add worthwhile strength to wood, it's way too brittle. If you're going through the mess of resin add a bunch of chop mat, three or four layers at least. It's hardly any extra work for a big payoff (if you're already laying up straight resin, for a smooth finish or whatever.)