Using the 220 covered Corian slab I sand the outer surfaces of the winglets.

Now to join the wing assemblies to the airframe.

I first shape the compound root edge of the main wing to match the contour of the airframe with 220 grit. Since the airframe is part paper BT and part 3D printed plastic, I'll use (2) adhesives: Titebond red and 15 minute epoxy.

Using the point of a Swiss file I give surface detail to the tail cone to receive the epoxy (note the employment of the Herculean thigh again.) I then mount the prepared wing assemblies to the airframe and use a butt-ugly-but-effective brace to square the wings from the airframe as the adhesives cure. I then fillet the entire length of both root edges of both wings.

TBC

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