I've used the original gorilla glue to build double-walled carbon arrows (one shaft inside another) and gluing the front-weighted brass weights and inserts as well. because the glue expands, it also fills the shaft behind any inserts, keeping them from breaking loose and traveling. but, I washed all components with dish soap, scored all components (.223 bore brush inside the shaft, sandpaper on the brass inserts and outside of the shafts to be glued), and also used water on all components just before assembly. these weighed 1020 grains when complete, and passed through water buffalo. never had one come apart. heat will release the glue, but at that temperature, it scorches the carbon. - Jay Campbell