RE: AJ-2 Construction Revisited
The tail surface is a skinned foam core.
The balsa sheets should be about 1/4" wider than the shucks.
A piece of 0.021" thick carbon fiber is used at the joint.
Finishing epoxy is squeegeed on the balsa sheeting.
Lay the cores on the sheeting. Mix some micro-balloons and finishing epoxy. Apply the mix on the edges and carbon fiber.
Lay the top sheeting on and tape the sheets together.