It'll be hard to reach the root edges once the wide conduit/tunnel is glued on. There isn't much room for glue fillets.
I decided to lightly smooth the dried glue fillets with 400 grit wrapped around a Q-tip for cushioned sanding. Go easy, it is possible to sand a shallow groove in the balsa. You are just knocking down any roughness.
I applied two fine lines of wood glue so there wouldn't be much squeeze out when pressed in place..
The lugs were set down and positioned using long tweezers.
I won't be applying glue fillets to the launch lugs. Sometimes trying to fill the bubbles of dried glue isn't worth the time.
The narrow glue lines were positioned so there wouldn't be any visible glue when the lugs were pressed in place.
The conduit/tunnel was centered between two fins on the opposite side of the engine hook and launch lugs. The older Estes instructions showed the tunnel on the same side of the engine hook. I thought it would be more interesting in launch photos with the tunnel facing out.
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