in a tent pole (which might be part of a "K3" branded tent or similar model), reviews and guides suggest several "installable" fixes: How to Repair a Broken Tent Pole - Coleman Replacement Kit
Cut a patch from the repair kit to match the size of the crack, leaving about 1/4 inch of extra material around the edges. k3 tent crack install
While "K3 tent crack install" may sound like a mechanical repair for outdoor gear, in a tent pole (which might be part