BarrelBond is the best pen turner’s glue we’ve used – ever. The two-part epoxy gel formulation is easy to mix and use, and the five-minute open time is enough to glue up multiple tubes. What else? It is gap filling, waterproof, flexible, easy to trim, easy to sand, non-sagging, and has an unlimited shelf life. Our favorite features are the gap filling and flexibility, because when properly applied, these characteristics mean fewer pen blank “blowouts” Features: