I used milled fiber and cabosil as my joint. Worked good as far as I can tell...

I would be interested in light weight stuff to use for ribs, etc. Like landing gear uprights.

Thanks for all the nice comments. I just take things a step at a time and move it to the next level. This wing weighed (gulp) like 2 lbs, 6 oz with the heavy lg mounts, etc in it. My balsa/foam equivalent was 1 lb 10oz. My target for the next wing will be 1 lb 10 or lighter. It shouldn't be hard to do. This wing was a feasibilty "study" so to speak and my brother got a free wing out of it for himself. Not a bad deal. I think it will be easy to cut the weight down now.

Michael