Tonight I did those metal hinges from World Models. 5 per aileron and sure enough, just doing the first wing side half I ran into the 30 min. epoxy congealing by the time I inserted the last 2. I had spent most of my time jamming exacto blades of the epoxy into the slots. The straw sounds nice. On the second wing I just did 3 then 2 more with a second batch. I used Vaseline on the hinge line, and Gelcoat, a carnuba wax spray used for cleaning up fiberglass sinks & tubs on the covering before insertion. I also spotted my trusty Rat-Shack talking timer I use for glider thermal duration practice and thought, "hey maybe I should use this thing when mixing epoxy". It sits there in the "clock" function when in the shop.
Jack