Epoxy should work fine, however, some make the mistake of not getting the mesh fully saturated with the epoxy, or they put the epoxy on over old epoxy. If there is already epoxy on the wood, you should get it off before applying glass cloth. You can easly remove the epoxy by heating it with a heat gun. You will know when it is ready, as the epoxy will just crumble away with a stiff brush. Be careful to protect surrounding area's, as you can weaken other glue joints or damage covering. Once you have the epoxy off, scuff the wood up with some course sand paper and apply your epoxy and glass cloth. I don't know about others, but I like 30 minute to 1 hour epoxy for this. It gives me more work time and seams a little more fluid for soaking into the wood. Use a good epoxy, like Z-Poxy also. It doesn't pay to scrimp here. One last note, in my opinion it is bad practice to use finishing epoxy in structural locations. It sands great, but is harder and less forgiving of impact and vibration.