Ava Monroe
Iron nails have been used for thousands of years, referenced in the Bible and used extensively by the Romans. They were once rare and valuable, but the invention of the slitting mill in 1590 simplified the production of nail rods. Today, nails are a cheap, mass-produced commodity, mostly made from wire. When cutting iron nails, it is important to wear safety goggles and protective gear. There are various tools that can be used, including a metal saw, bolt cutters, a grinder, or a multi-tool with a Bi-Metal SMART blade. For a quick solution, a woodworking hand saw can be used by creating small teeth and cutting the nail with a hack saw motion.
| Characteristics | Values |
|---|---|
| Tools to cut iron nails | Dremel with a cut-off disc, bolt cutter, tile nipper, vise grips, MultiMaster, grinder, pliers, woodworking hand saw, SMART multi-tool blade, oscillating tool, crescent bolt cutters, Knipex bolt cutters, hacksaw blade, carbide blade |
| Safety precautions | Wear safety goggles, hearing protection, and eye protection. Keep a fire extinguisher handy. |
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What You'll Learn
Using a woodworking saw
If you don't have a metal saw, you can still cut iron nails with a woodworking hand saw. This method will not damage the saw's teeth. Take a hammer, crowbar, screwdriver, or file and use it to strike the flat backside of the hand saw's blade, creating small divots. Space out these strikes to create tiny teeth along the blade. These teeth will be able to cut through iron nails.
It is important to note that this method may not work with modern saws, which typically have carbide-tipped blades. Carbide-toothed TS blades can cut through nails, but it is not recommended as it may be unsafe and can damage the saw. If you have a modern saw, it is better to use a different method to cut iron nails.
If you are dealing with a small number of nails, you can try removing the iron by coring the nails with a small bore carbide or bimetal hole saw. Plug the resulting holes with cores cut from the end of the timber to minimise the shortening of the boards, and then mill them.
Alternatively, you can use a different type of saw altogether. A reciprocating saw with a metal-cutting blade can be used to cut nails and pipes. For thin metal, choose a blade with 20 to 24 TPI (teeth per inch), for medium-thickness metal, use 10 to 18 TPI, and for thick metal, use about 8 TPI. Oscillating tools fitted with metal-cutting blades can also be used to cut nails and other metal objects in tight spaces.
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Using a grinder
When using a grinder to cut iron nails, there are a few key considerations and steps to follow. Firstly, it is important to prioritise your safety. Grinders are powerful tools that can generate sparks and metal chips, so wearing appropriate safety gear is crucial. This includes eye protection, earplugs or ear protection, and potentially a fire extinguisher nearby as an extra precaution.
The next step is to choose the right grinder and cutting wheel. Angle grinders are powerful metal-cutting tools that can be used for cutting iron nails. They typically have a cutting blade with a 4.5-inch diameter, which is the most popular size. When selecting a cutting wheel, you have the option of using a metal-cutting wheel or a diamond blade. The diamond blade is rated to cut ferrous metal and offers longer-lasting performance, faster cutting, and slower wear and tear compared to abrasive discs.
Once you have your grinder and cutting wheel, it's important to clamp or secure the iron nail in a vice or similar setup to ensure stability and control during the cutting process. This helps prevent slippage and accidental damage to the surrounding surface. With the nail securely clamped, you can start the grinder and slowly bring the cutting wheel into contact with the nail. Apply light pressure and let the grinder do the work. With a steady hand, you can achieve a clean cut through the iron nail.
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Using a multi-tool
Iron nails can be cut using a multi-tool, such as the SMART 32mm Bi-Metal blade, which is designed to cut through wood, nails, and non-ferrous metals. This blade offers universal cutting up to 51mm deep and is considered safe for cutting timber with hidden nails.
To cut iron nails with a multi-tool, follow these steps:
- Attach the blade to your multi-tool. Ensure that the blade is specifically designed for cutting through nails, like the Bi-Metal blade, to increase the lifespan of your blade and prevent damage.
- Position the blade against the bottom of the nail, ensuring that the blade is sitting flat against the surface.
- Begin cutting through the nail by continuously moving the blade side to side in a hack saw motion. This motion helps spread the load across the teeth of the blade, reducing wear and increasing the blade's lifespan.
- Continue the hack saw motion until the nail is fully removed.
It is important to choose the right blade for cutting iron nails. Some blades, such as standard wood blades, may break when cutting through nails. Additionally, consider the diameter of the nail and the hardness of the metal when selecting the appropriate blade.
For smaller nails, a mini bolt cutter can be effective. Knipex, for example, offers bolt cutters with angled jaws designed for flush cutting. Alternatively, an oscillating multi-tool with medium metal blades or carbide blades can be used. These blades typically have teeth similar in size to a hacksaw blade, making them suitable for cutting iron nails.
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Using bolt cutters
Bolt cutters are a type of heavy-duty wire cutter with long handles and a geared cutting mechanism that magnifies the force applied to the handles. They are designed to cut large-diameter fasteners, such as iron nails, and are particularly useful when dealing with fasteners that have a larger diameter.
When using bolt cutters to cut iron nails, it is important to ensure that the cutting blades fit completely around the shank of the nail. If the nail is embedded in wood or another material, you may need to create some space by chiselling around the head of the nail.
To achieve the maximum cutting force, work the tool around the nail until the shank is as close to the pivot point as possible. This will allow you to apply the right amount of force to snip the nail.
It is worth noting that bolt cutters are bulky tools, which can make it challenging to access nails in tight spaces. They may leave a stub, and they are not always the best tool for the job. However, they are a versatile option, capable of cutting through steel chains, padlocks, and even rebar.
When choosing a bolt cutter, consider the size of the nails you need to cut. Bolt cutters come in a variety of sizes, and you may find that mini bolt cutters or smaller versions are better suited for cutting iron nails.
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Using a hacksaw
Firstly, it is important to choose the right hacksaw blade. The blade needs to be harder than the metal, otherwise, it won't cut efficiently and may become dull quickly. For harder metals such as iron, a blade with 6 to 14 teeth per inch is ideal. The fewer teeth require more pressure but can handle denser, more rigid metals. An 8 or 10-teeth per inch blade is a good all-purpose choice for most metal-cutting jobs. If cutting thicker pieces of hard metal, consider using a blade with 6 or 8 teeth per inch.
Before cutting, it is important to securely clamp the nail to a surface to prevent it from moving as you cut. If clamping is not possible, ask someone to help brace and support the workpiece. For cutting harder metals, you can apply cutting fluid along the cutting line before and during cutting. This reduces friction and heat, extending the life of the blade. For softer metals, cutting fluid is usually unnecessary.
When using the hacksaw, hold it at a 90-degree angle and keep your arm steady. Apply firm and even pressure as you push the saw forward and pull it back. Maintain a steady pace and speed—rushing can cause the blade to bend or break. For the most effective cutting, focus on applying pressure on the pull stroke as you draw the saw back towards you.
It is worth noting that there are alternative tools for cutting iron nails. For example, an angle grinder fitted with an abrasive metal-cutting disc can cut all kinds of metals, but the discs wear down quickly. A diamond blade rated to cut ferrous metal is a better option as it will last longer and cut faster and cleaner.
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Frequently asked questions
You can use a mini grinder with a cutoff wheel or a dremel with a cutoff disc.
Wear safety goggles, hearing protection, and eye protection. Keep a fire extinguisher handy.
A woodworking hand saw can be used to cut iron nails. Hit the saw a few times from one end to another to create tiny teeth.
A Bi-Metal SMART blade is small enough to fit through awkward spaces and can cut through timber and nails.
