Ah, yes . . ."The Great Glue Debate" this has been going on for literally years as anyone who is building in wood will know. There are lots of choices these days but I took the lazy way out and opted for the easiest to use. That's oversimplifying the process a little, as I did a fair amount of reseach first, but ease of use was high on my list of priorities.
I'm using West Systems exclusively for my Falco and have found it to be very user friendly and from the tests I've done, also very strong.
(The usual "three blocks of hardwood whacked with a hammer" type of thing)
As with all thermosetting resins it is temperature sensitive so it's not a great idea to paint your aeroplane matt black, but to my knowledge no one has yet had a wing fall off on a hot day.
As some one stated earlier in this thread, Aerolite is not available in Australia so we builders of wooden aeroplanes (Natures composite - you can trust a tree !) are forced to seek alternatives, the most popular appearing to be Resorcinol.
The downside to it is the need for joints to be quite accurate (ie no gaps) and it also requires high clamping pressures. West System, and I assume other epoxys, has gap filling properties when flox is mixed in and does not need any greater clamping pressure than is required to hold the two pieces in contact with each other.
In fact high clamping pressures are discouraged as it squeezes the glue out of the joint; advice I received from the technical guru's at Gougeon Brothers Inc. who make the stuff.
The recommended application method is to mix the resin and hardener (5:1 ratio), brush it onto each surface, then thoroughly mix flox into the remaining glue in the pot to achieve the required consistency. This can range from a creamy texture right up to something like butter, that will stand up on it's own. The more flox, however, the weaker the joint, as the flox is used only to provide gap filling abilities and stop the epoxy dribbling out of the joint all over the floor.
The epoxy / flox mixture is then applied to only one of the surfaces, and the two pieces joined.
Aerolite however, is the glue of choice for 90% of Falco builders, probably because it is recommended in the construction manual and also because 90% of Falco builers live in the US or England where you can still get it!
One final advantage of using expoxy is that the sealing / gluing process can be done in one step. If you use Aerolite, Resorcinol, etc. when fitting a wing skin, for example, you must carefully mask off the areas where the glue will be applied then varnish the remaining interior side of the skin to seal it against moisture.
With epoxy you can simply brush the mix over the entire surface, apply it to the ribs, etc. that the skin will be attached too, followed by the flox mix, then staple the thing on.
I do know of one finished and flying Falco that is stuck together with West Systems so this gives me some comfort that mine will be structurally OK, unless of course I do an Icarus and fly too close to the sun !