Can a chainsaw cut through nails?

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Chainsaws are a heavy-duty tool and they can handle pretty much any wood cutting job easily. But when working with wood that has been used in construction or has been part of a structure previously it is very common to find nails in such types of wood. So what happens to a chainsaw if it comes in contact with nails when cutting through the wood?

If chainsaw teeth occasionally come in contact with a nail hidden inside wood it can cut through the nail but not without consequences. Every time your chainsaw accidentally cuts a nail, this metal on metal contact is going to cause the teeth of the chainsaw to become dull prematurely. But there are heavy-duty chainsaws available with specially designed blades that can handle cutting an occasional nail inside the wood without any problem.

Chainsaws are a powerful cutting tool and they can make it relatively easy to chop down wood into smaller pieces. With that being said you are bound to find nails even in freshly cut trees. So if you have to cut wood that commonly contains lots of nails this article is for you because we are going to tell you about what type of chainsaws can cut through nails and how you can avoid cutting nails with a chainsaw in the first place.

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What type of chainsaw can cut through nails?

 For people who work with old lumber, it can become difficult to avoid cutting nails hidden inside the wood when using a chainsaw. Therefore it is very important to know what type of chainsaw you can use to cut through nails without damaging the blades or the motor itself. Chainsaws are generally divided into two major categories which are:

  1. Home use chainsaws
  2. Commercial chainsaws for professionals

Home use chainsaws

As the name suggests this type of chainsaws are meant to be used for light chopping and cutting and are mostly used to trimming branches of trees in the yard. These types of chainsaws are mostly electric powered and they can either have rechargeable batteries for cordless usage or they can have a cord that you need to plug in before you can use the chainsaw but they also come with small gas engines. Home use chainsaws cost less than $500 and they are not very powerful not to mention their chain and blades are not made with reinforced material which means they can’t handle cutting nails and can get dull or damaged if they come in contact with nails while cutting wood. As we mentioned earlier even if you are able to get away with cutting one or two nails with a home-use chainsaw there is no guarantee that your luck will work every time because domestic chainsaws are just not designed to handle such abuse.

So the only option you have, if you are using a chainsaw meant for home use, is to make sure there are no nails in the wood before you start cutting it. Because there is a high possibility that the chain of a light-duty home use chainsaw can break while cutting a nail inside a log and injure the person operating the chainsaw or someone standing nearby. The upside to home use chainsaws is that they are lighter and since they are electric-powered they are very quiet machines and those with a gas-powered engine are not too loud either because the engine is usually pretty small. But when it comes to cutting wood with a lot of nails, the home use chainsaws are not recommended.

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Commercial or professional use chainsaws

If you are someone who lives in the countryside or works in the construction industry then a commercial use chainsaw is the right tool for you. In addition to having a powerful engine, these heavy-duty chainsaws have durable and reinforced teeth that allow you to cut through nails and other metal particles stuck inside the wood. There are still limitations to how much abuse a chainsaw blade can take before it starts to show signs of dullness but cutting an occasional nail here and there is not going to cause any problems if you own a commercial chainsaw. These chainsaws are mostly gas-powered and have 2 stroke engines that provide plenty of power to cut through nails. Some commercial chainsaws are even equipped with chains that have carbide teeth which makes them virtually indestructible.

The downside of commercial chainsaws is that they are extremely noisy and require a lot of maintenance as well. Not to mention they are heavy machines and require a lot of strength to handle properly.

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How to detect nails in wood?

Prevention is the best cure and obviously, it is best to avoid cutting through nails all together to prevent your chainsaw blades from getting dull prematurely. Besides, it is safer not to cut nails all together since it produces a lot of sparks when chainsaw blades hit the nail which can cause a fire. Nails are not only found in old lumber, in fact, but it is also very common to find nails and other metal pieces inside tree logs as well. The reason why nails and other metal items get into logs is that trees continue to grow around metal objects causing the metal to get embedded into the tree. And when an unsuspecting chainsaw blade comes in contact with a hidden nail or wire inside the log it can damage its teeth and even ruin the motor completely. But there are a few ways you can tell if there are nails inside wood or not:

  • Visual inspection of the wood: Once you have selected the tree or a piece of wood to cut, pay close attention to the surface of the wood and look for any holes. Also, make sure that there aren’t any unusual bumps on the surface of the wood or the tree bark because it can be a sign that tree has been growing on top of a nail that was hammered into it. If you are about to cut a tree look for any posters on the tree because chances are the poster is held to the tree using nails and you can pull them out before cutting the tree down. Nails are usually hammered at the height of 5-10 feet on the tree so you should always pay close attention when cutting the tree at this height. You can also look around the tree before cutting it and if there is a fence attached to a tree then chances are the tree might have grown around the metal fence and there can be some pieces of metal fence still inside the tree that can ruin a chainsaw.  
  • Use magnets to detect nails: Another great way to detect nails inside wood that has been removed from a house or other structures is by using a powerful magnet. Rare earth magnets are some of the strongest permanent magnets and they are perfect for detecting nails inside the wood. All you have to do is tie the magnet to a string or fishing line and swing it near the surface of the wood. Swing the magnet along the complete length of the wood and if the magnet attaches to the wood it is a sign that there is either a nail or some similar metal object under the surface of the wood. This method can help you find a metal object that is buried a few inches under the surface of the wood.
  •  Use a metal detector to find nails in wood: This is the most reliable way to detect nails or other metals buried in the wood. Metal detectors are devices that allow you to detect metals that can be hidden several feet under the surface making them perfect for finding nails in wood. There are two types of metal detectors, the ones that are traditionally used for detecting items under the ground and the handheld ones. The bigger metal detectors that you typically see are great for finding a metal that is deep inside a piece of wood because they are more powerful than the handheld ones. But the handheld metal detectors are light and easy to use and you can use them on the tree before cutting them. Either way, you can easily detect nails in wood using a metal detector and this method is going to make sure that there aren’t any nails left inside wood that can damage your chainsaw.  

Conclusion

Chain saws might seem indestructible but the truth is even a tiny nail can ruin your expensive cutting tool and repairing a bad chainsaw motor or replacing the blades can be expensive. Therefore it is best to use the right kind of chainsaw if you think there are nails and other metals inside the wood. While not all chainsaws can cut through nails heavy-duty commercial chainsaws are specially designed for this purpose and you should use them instead of light-duty domestic chainsaws if you want to cut wood that has a lot of nails embedded in it.