We added 2 pieces of balsa wood to each wingtip to close up the back end. These were carefully cut and sanded to fit precisely in the openings, then we applied 2 coats of epoxy sealer, and glued them in place with Hysol adhesive. We had used a few small screws in the balsa to aid installation, but went back with lightweight filler to fill in the screw holes as well as smooth out the transitions between fiberglass and balsa.
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| Balsa pieces glued in place |
We cleaned the parts and shot a coat of primer. Initially it looked ok at a distance, but when we got closer we noticed a ton of pin-holes in the primer, which were apparently caused by small pinholes/divots in the fiberglass surface. We weren't happy with how this looked, so are now in the process of sanding it down, and will take extra steps to ensure the surface is smooth without divots prior to priming again. This is one of those frustrating learning experiences, but we'll know better next time.
Hours: 10
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| Coat of primer on wingtips |
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