Nope not yet. One thing people dont realize is that epoxy is not fuel proof. Yes a lot of people use it in their firewall area to protect the wood but usually it is painted over thus protecting it. Also when it is put on it is usually put on fairly thick. Glow fuel will soften epoxy and thus cause failure I have seen many a firewall come flying off planes due to being slowly eaten away by glow fuel. There are several compatability charts out there one I can think of off the top of my head is the Harry Higley book i think its the There Are no Secrets one and it has a glue compatability chart. CA is better for hinging that epoxy for 2 reasons. 1: it is more resistant to glow fuels and 2: it soaks into the balsa even the thick will soak in some. Epoxy is a surface adhesive which just mechanically bonds two surfaces without soaking into the wood. if is it thinned way down with alcohol it will soak in some but it is mainly the alcohol that is doing the soaking in. Dad is a furnature restorer and has a wood shop and I got to learn a lot about wood glues used through the furnature industry and that transfers to ours. I havent used epoxy in over 20 yrs I use stuff like hide glue, titebond, or polyurethane glues and have never had a failure and use CA for my hinges.

Joe