Can You Use An Angle Grinder To Cut Stone? Experts Weigh In

Are you looking to cut through stone for your next DIY project?

You may be wondering if an angle grinder is the right tool for the job.

Well, the answer is yes!

An angle grinder can be a powerful and versatile tool for cutting through a variety of materials, including stone.

But before you get started, it’s important to understand the proper techniques and safety precautions to ensure a successful and safe project.

In this article, we’ll explore everything you need to know about using an angle grinder to cut stone, from the tools you’ll need to the best techniques for getting a clean and precise cut.

So let’s dive in and get started!

Can You Use An Angle Grinder To Cut Stone

Yes, an angle grinder can be used to cut stone. However, it’s important to note that not all angle grinders are created equal.

When it comes to cutting through stone, you’ll want to make sure you have the right type of blade. A diamond blade is the best option for cutting through stone, as it is designed to handle the hardness and density of the material.

It’s also important to choose the right size angle grinder for the job. A 4.5-inch angle grinder can cut through stone up to 1 inch thick, but for thicker stones, a 9-inch angle grinder may be more efficient.

Tools You’ll Need

Before you begin cutting stone with an angle grinder, there are a few essential tools you’ll need to have on hand:

1. Angle grinder – As mentioned above, you’ll want to choose the right size angle grinder for the job. A 4.5-inch angle grinder is suitable for cutting stone up to 1 inch thick, while a 9-inch angle grinder is better for thicker stones.

2. Diamond blade – A diamond blade is specifically designed for cutting through hard materials like stone. Make sure to choose a blade that is suitable for the thickness of the stone you’ll be cutting.

3. Personal protective equipment (PPE) – Safety should always be a top priority when using power tools. Be sure to wear a mask, safety glasses, work gloves, and earplugs to protect yourself from dust and noise.

4. Clamps or vise – To ensure that the stone stays in place while you’re cutting, you’ll need to secure it with clamps or a vise.

5. Water source – Cutting through stone generates a lot of dust, so it’s important to keep the blade cool and reduce dust by using a water source such as a spray bottle or hose.

By having these tools on hand and taking the necessary precautions, you can safely and efficiently use an angle grinder to cut through stone for your next project.

Safety Precautions

Using an angle grinder to cut stone can be a dangerous task if proper safety precautions are not taken. Here are some important safety measures to consider before operating an angle grinder:

1. Protective Gear: Ensure that you’re wearing appropriate protective clothing from head to toe, including safety shoes, gloves, safety goggles, ear protection, and a dust mask. Since angle grinders operate at high speeds, random chunks of debris flying towards you won’t be an infrequent occurrence. Some users have reported grinder discs breaking and flying towards them, making proper gear essential.

2. Blade Selection: Always use a diamond-tipped blade when cutting stone with an angle grinder. Notched blades work well for porcelain, while serrated blades are best for natural stone. Diamond blades make clean cuts without chipping tiles, but they can be damaged by vibrations if not secured securely.

3. Secure the Workpiece: Always clamp the workpiece securely so that you have both hands free to control the machine. Holding the workpiece with your hand should be avoided as far as possible, especially to prevent the workpiece and thus the machine from slipping.

4. Two-Hand Operation: Angle grinders should always be held with both hands, even if some models labelled as “one-handed angle grinders” suggest otherwise. This is because the user’s strength decreases over time and control over the machine can quickly occur.

5. Extraction Systems and Vibration Damping: Grinding produces dust that can put a lot of strain on the lungs. Therefore, you should always make sure that the sanding dust flies away from your body and is removed by suitable extraction systems. In addition, vibrations generated during grinding have a considerable impact on the musculoskeletal system and can lead to problems such as muscle changes or bone and joint damage.

By following these safety precautions, you can minimize the risk of injury and health hazards when working with an angle grinder to cut stone. Remember to always prioritize your safety first before starting any project.

Choosing The Right Blade

When it comes to choosing the right blade for cutting stone with an angle grinder, there are a few factors to consider.

Firstly, you’ll want to look for a diamond blade. These blades are specifically designed to cut through hard materials like stone, and they’re available in a variety of sizes and styles.

Segmented blades are a popular choice for cutting stone with an angle grinder. These blades have teeth with diamond segments that allow them to cut through stone, marble, granite, brick, masonry, and paving flags. They can be used for both dry and wet cutting, and they may even self-sharpen during operation by erasing diamond grits during the cutting process.

Another factor to consider when choosing a blade is the size of the blade itself. As mentioned earlier, a 4.5-inch angle grinder can cut through stone up to 1 inch thick, while a 9-inch angle grinder can cut through thicker stones. Make sure to choose a blade that’s compatible with your angle grinder’s size and power output.

Lastly, consider the type of stone you’ll be cutting. Different types of stones have different densities and strengths, so you’ll want to choose a blade that’s appropriate for the specific type of stone you’ll be working with.

Preparing The Stone For Cutting

Before you begin cutting the stone with an angle grinder, it’s essential to prepare the surface properly. Start by cleaning the stone thoroughly to remove any dirt, debris, or oil that may be present. This will help ensure that the blade can make a clean cut and prevent any damage to the grinder.

Next, mark the area where you want to cut the stone. Use a pencil or marker to draw a straight line across the stone’s surface, indicating where you want to make the cut. Be sure to measure and mark the line accurately, as this will serve as your guide throughout the cutting process.

Once you’ve marked the stone, secure it firmly in place using a clamp or vice grip. This will prevent it from moving during the cutting process and ensure that you make a precise cut.

Before you begin cutting, don’t forget to put on safety gear such as goggles, gloves, and a dust mask. This will protect you from any debris or dust that may be generated during the cutting process.

Finally, attach the diamond blade to your angle grinder, making sure that it is securely fastened. Turn on the grinder and slowly lower it onto the stone along your marked line. Apply steady pressure as you move forward, keeping an eye on your progress and adjusting your technique as necessary.

By following these steps and taking proper precautions, you can use an angle grinder to cut stone safely and effectively.

Techniques For Cutting Stone With An Angle Grinder

Cutting stone with an angle grinder requires some specific techniques to ensure a clean and precise cut. Here are some tips to help you get the job done:

1. Mark the stone: Before you start cutting, it’s important to mark the stone where you want to make the cut. Use a straight edge or a ruler to draw a line where you want to cut.

2. Secure the stone: Place the stone on a flat surface and use clamps or a vice to hold it securely in place. This will prevent the stone from moving while you’re cutting.

3. Wear protective gear: Cutting stone with an angle grinder can be messy, so it’s important to wear protective gear such as safety glasses, gloves, and a dust mask.

4. Start with a shallow cut: When making your first cut, start with a shallow depth and gradually increase it until you reach the desired depth. This will help prevent the blade from binding or overheating.

5. Keep the blade cool: Cutting through stone generates a lot of heat, which can cause the blade to overheat and wear out quickly. To prevent this, use water or a coolant to keep the blade cool while you’re cutting.

6. Use a steady hand: Hold the angle grinder firmly with both hands and use a steady hand to guide the blade along the marked line. Avoid applying too much pressure, as this can cause the blade to bind or kick back.

7. Take breaks: Cutting through stone can be tiring, so take breaks as needed to rest your hands and avoid fatigue.

By following these techniques, you can use an angle grinder to cut through stone with ease and precision. Just remember to choose the right blade and size angle grinder for the job, wear protective gear, and take your time to ensure a clean and safe cut.

Finishing And Cleaning Up

Once you’ve made your cuts with the angle grinder, it’s important to finish and clean up the stone properly. One common issue with stone cutting is the rough edges left behind after the cut. To smooth out these edges and give your project a professional look, you can use polishing pads with varying grits to achieve the desired level of smoothness and sheen.

Start with a low grit pad (around 50 grit) and work your way up to higher grits (up to 3000 or more) until you achieve the desired finish. Be sure to wear proper personal protective equipment (PPE) such as a mask, safety glasses, and work gloves when using polishing pads.

In addition to polishing, it’s important to clean up any debris left behind from the cutting process. Use a brush or vacuum to remove any dust or stone particles from the work area. If necessary, use a damp cloth to wipe down the surface of the stone.

Finally, be sure to properly store your angle grinder and diamond blade when not in use. Store them in a dry, secure location away from children and pets. Regularly inspect your blade for any signs of wear or damage and replace it as needed to ensure safe and efficient use.