Fit up main fin skins, took some time with the tapered body and airfoil profile. I’m glad 3M keeps blue tape in stock, rates right up there with sand paper as essential.
Once the skins were fit, removed them one at a time and practiced sliding them on, like stuffing an envelope in reverse. The tape held as long as I used 1” filament tape at the narrow pinch point. Next applied epoxy to the inner fin structure then spread and slid the skins on. Starting at the tip I removed the first piece of tape, spread the halves with a small flat screwdriver and added a generous bead between the skins, then leap frogged around the fin adding additional tape along the way. Between the two filament bands I left a small gap and injected epoxy (Loctite 120 Hysol with mixing tip.
Once the skins were fit, removed them one at a time and practiced sliding them on, like stuffing an envelope in reverse. The tape held as long as I used 1” filament tape at the narrow pinch point. Next applied epoxy to the inner fin structure then spread and slid the skins on. Starting at the tip I removed the first piece of tape, spread the halves with a small flat screwdriver and added a generous bead between the skins, then leap frogged around the fin adding additional tape along the way. Between the two filament bands I left a small gap and injected epoxy (Loctite 120 Hysol with mixing tip.