The model was designed to have the bottom wing glued to the fuselage. I wanted it to be removable. I epoxied a balsa piece to the bottom of the fuselage that the wing will slide under and be captured. The blue tabs glued to the wing keep it aligned.

Rear wing mount: I glued a piece of balsa to the back of the rear bulkhead and glued in the threaded part of a 3mm "T" nut that I trimmed the flange from. The hole is offset from center due to the fact that I cut and re-glued the bottom wing to remove much of the dihedral. I couldn't drill the hole through the glue which was in the center. If I'd removed the dihedral by heating and bending as basketcase did, I wouldn't have had the problem.

Notice the trimmed wood on the top of the bulkhead itself. That was done so it would clear the flatter wing profile after removal of the dihedral.

Closeup of the wing mounting screw. I cut a rectangle of foam from the wing about 2/3 of the wing thickness deep and drilled a hole slightly larger in diameter than the 3mm Nylon screw. I then painted the cut-out with epoxy and inserted a piece of 1/32" thick plywood also with a screw hole drilled in it. I then ran epoxy around the edges of the wood. The plywood carries the strength of the full thickness of the foam.

Closeup of fish hook eye and Teflon tube for pull/pull lines.

Strut mount: In order for the lower wing to be removable the struts were pinned to balsa mounts with 0.040" CF rods which are friction fit. Landing wires were attached to the struts rather than the wing to facilitate it's removal. The balsa mounts and struts were soaked around the holes with CA for strength.

Flying wires are attached No.1 fish hook eyes epoxied in the fuselage. Needle holes were poked through the fuse scattered around the shank in an 3/16" radius. It is hoped that the epoxy filled the holes and provided a strong, wide base of support for the hook eye.

Struts: The supplied struts were not scale shape. Furthermore, they were quite flexible. I sliced new ones from a sheet of hard balsa and shaved them with a double edged razor plane. After that they were sanded. Using the plane cuts down on the mess of lots of sawdust.

Equal weights were hung on the two strut materials to show relative strength. They are the same two pieces shown in the above photo. My material is 0.125" thick, their's is 0.115". Mine has been planed to be less wide. Goes to show how the quality of materials makes a difference. After the test I was fooling with their piece and it snapped in half almost like it was end grain.