Some 220 grit sandpaper was wrapped around a dowel and the dried epoxy fillet lightly sanded.This wasn't needed on each fillet, two fillets had minor high spots. Again, be careful not to sand into the fin and scar the balsa.
I've still got to fill the body tube seams. They were marked with a pencil.
The seams will be shot with primer.
Normally for an isolated seam fill, I'd mask just the seams to lay a coat of primer directed right on the seams.
But with the fins and lugs already glued in place, no tape will be used. the primer will simply be shot close and directly on the seams.
The Duplicolor primer has a nozzle tip that you can turn, changing the paint coverage from a wide fan spray to a narrow line. The tip was turned to spray the narrow line down the seams.
To mask the engine mount, tape was set sticky side out around the inside of the main body tube. Remove some of the tackiness by pressing the tape on your pant leg a few times, otherwise it might lift some of the body tube when removed.
More tape was added to the end of the motor mount tube and engine hook.
Paper towel strips were stuffed into the rear void with tweezers and a dowel.
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