You have repeated what I have read in other posts, that CA joints are brittle. Well several days ago in my shop, I turned over a bottle of thin CA without noticing. Today I went to pick it up off my workbench and the CA had flowed around the bottle gluing it firmly to the paper I had covered my work surface with. I cut the hardened glue away from the bottle and was suprised to find that it is quite flexible. It was hard to cut and was extremely tough but could be bent back over itself without breaking. The hardened glue was at least as strong and less brittle than epoxy. I may have to reevaluate my understanding of CA. Some of the weakness seen in CA joints may be as much joint fit up as it is due to the CA.