I had a warp in a rib that I thought I took care of when making the outer wing panel. As you can see in the pictures, the LE and TE fit perfectly and are flush to the center section, but the warp made an approximate 3/32” gap in the most of the middle area. Before I epoxy both sections together, I thought I’d get some feedback…

1. Just go ahead an epoxy the two together and try fil fill the gap with epoxy
2. Fill the gap with fiberglass and epoxy
3. Fill the gap with wood “shims” via Titebond and then epoxy
4. Something else? My concern is the strength of bond holding the two panels together

I can’t just sand the outer wing panel to fit because any over/uneven sanding of the LE or TE will put the wing tip too far forward or back. Thanks.

Take some sheeting balsa and glue against the rib. Take a flat sanding bar to to get the root rib flat. Pretty common problem to deal with when building.

Are the two sections butt joined together or is their some sort of joiner that carries through? If it is the former then you might be wise to concern yourself with filling the gap. If the latter is the case then I would not hesitate to simply glue the two panels together with plenty of epoxy. My .02 cents of course.

I think I'll do both suggestions, lay some 1/16 sheeting in and sand it, try to close the gap about half way and then epoxy.