I have mentioned this option in several threads on roadside welding. It is absolutely feasible to use composites to fix frames, or even possibly parts. Not so sure about that birdsnest of fiber in the picture. Carbon is a lot stronger, and cheap enough in some forms. Just look at all the bamboo bike threads, they are held together with everything from twine to carbon tow. Epoxy is good, JB is good, but it doesn`t wet out fiber all that well. Small bottles of WEST and some carbon tow could fix almost anything.