Tools Needed

• To use a torch to loosen and remove a bolt, you will need a small, handheld propane torch, available at a hardware store or large general retailer. You will also need a wrench the size of the bolt you are trying to remove, or an adjustable wrench. A bottle of penetrating lubricant will also be helpful in the removal of the bolt as well as rags to wipe up any messes. While propane torches are safe if handled properly, you should also have the proper safety gear on hand, including work gloves and eye protection.
  
  

Using a Propane Torch

• A propane torch can be used to help loosen and remove a bolt by running the torch over the bolt or fastener. The heat will cause the fastener to expand and break the bond with whatever it is fastened to. Turn the torch on according to the directions on the bottle. Run the torch over the fastener in a back and forth manner, ensuring that the hottest part of the flame makes contact with the fastener. Once the fastener is heated up, attempt to loosen it with the wrench. Turn the torch off after each use. Do not touch the fastener with your hands as it will be hot. If the fastener is still stuck, let it cool for a few minutes and then spray the penetrating lubricant around the fastener. Allow it to soak in for several minutes, or as long as possible, and then try to loosen it.
  
  

Other Methods

• Other methods of loosening bolts include using penetrating lubricant, which is sprayed on and allowed to soak into the fastener. Once it has soaked in, use the wrench to loosen and remove the bolt. Bolt heads can also be cut off with a saw or a cutoff wheel on an angle grinder or similar tool, although this may require drilling out the remainder of the bolt with a drill, which can be very difficult.
  
  

Precautions

• When using a propane torch to loosen a rusted bolt, ensure that you follow the proper safety precautions. Verify that nothing flammable is near the fastener that you are working on, and work outside if possible. Keep a fire extinguisher on hand in case anything does catch on fire, and always wear the proper protective gear, including eye and hand protection.