However, you can be his rival and channel Wonder Woman's strength with our easy trick to fix this one. Loosen a stubborn screw, bolt or nut from a metal surface with white vinegar, kerosene or ammonia. Careful, though: Every good superhero knows safety comes first. Kerosene is flammable, so it should not be used near an open flame, and working safely with ammonia requires good ventilation. As long as you have a window cracked and all fires extinguished, pour away and be amazed at your new powers.