Removing blue threadlocker can be done with the following steps: Heat the area: Apply heat to the threaded assembly with a heat gun, torch, or hairdryer to soften the threadlocker. Use a penetrating oil: Apply a penetrating oil, such as penetrating fluid, to help loosen the bond between the threadlocker and the metal. Let it sit for 10-15 minutes. Apply force: Use pliers, a wrench, or a vise grip to turn the fastener and break the bond. Repeat as necessary. Clean the threads: Use a wire brush or solvent to remove any remaining threadlocker residue from the threads. Note: If the above methods do not work, the fastener may have to be cut off or drilled out and replaced.