You'll be able to pull them with heat. If you don't have an insert tool to heat, screw in a field point and use some pliers, heat the pliers which will transfer the heat to the field point in turn loosening the epoxy, apply pressure (pull) the entire time and it will pull the inserts out. Even though your not using the cut end of the arrow anymore, applying flame to the carbon will burn it emitting obnoxious gases. On a good arrow, it will destroy the carbon as well.