If you’re looking to create beautiful hardscaping features for your garden or outdoor space, flagstone is a great material to work with. Flagstone is a type of sedimentary rock that is typically used for paving and landscaping projects. It’s easy to work with and has a natural, rustic look that can enhance the aesthetic of any outdoor space. However, cutting flagstone to fit your specific needs can be a challenge. Fortunately, with the right tools and techniques, cutting flagstone with an angle grinder is a straightforward process. In this article, we will cover the steps and tips about how to cut flagstone with angle grinder.

Tools Required
To cut flagstone with an angle grinder, you will need the following tools:
- Angle Grinder– This is a handheld power tool that can be used to cut, grind, and polish a variety of materials. For cutting flagstone, we recommend using a 4.5-inch angle grinder.
- Diamond Saw Blade– The diamond saw blade is a specialized cutting tool that is designed to cut through hard materials like stone and concrete. For cutting flagstone, we recommend using a 5-inch diamond saw blade with a continuous rim.
- Safety Gear– Cutting flagstone with an angle grinder can be dangerous, so it is important to wear safety gear. You will need safety goggles, a dust mask, and earplugs.

Preparing the Flagstone for Cutting
Before you start cutting the flagstone, you need to prepare it for the job. First, clean the flagstone to remove any dirt or debris that may be on it. Then, use a chalk line to mark the cutting line on the flagstone. Make sure the line is straight and even.
Cutting the Flagstone
Once the flagstone is prepared, you can start cutting it with the angle grinder. Follow these steps:
Step 1: Attach the Diamond Saw Blade to the Angle Grinder
To attach the diamond saw blade to the angle grinder, follow the manufacturer’s instructions. Make sure the blade is securely attached to the grinder.
Step 2: Turn on the Angle Grinder
Before you start cutting, put on your safety gear, and turn on the angle grinder. Hold the grinder firmly with both hands.

Step 3: Start Cutting
Position the diamond saw blade on the cutting line you marked earlier. Slowly lower the blade onto the flagstone and start cutting along the line. Keep the blade perpendicular to the flagstone, and apply even pressure as you cut.
Step 4: Check the Cut
After you have cut a section of the flagstone, check the cut to make sure it is straight and even. If the cut is not straight, you can use the angle grinder to make adjustments.
Step 5: Continue Cutting
Continue cutting along the cutting line until you have completed the job. Make sure to take breaks as needed to avoid overheating the blade or the angle grinder.

Tips for Cutting Flagstone with an Angle Grinder
- Use a Continuous Rim Diamond Saw Blade– The continuous rim diamond saw blade is ideal for cutting flagstone because it has a smooth, even cutting edge that can cut through hard materials without chipping or breaking.
- Keep the Blade Cool – Cutting flagstone can generate a lot of heat, which can damage the diamond saw blade. To keep the blade cool, you can periodically dip it in water while cutting.
- Use Light Pressure – It is important to use light pressure when cutting flagstone with an angle grinder. Too much pressure can cause the blade to overheat or break.
- Wear Safety Gear – Cutting flagstone with an angle grinder can be dangerous, so it is important to wear safety gear. Make sure to wear safety goggles, a dust mask, and earplugs.
Conclusion
Cutting flagstone with an angle grinder can be a challenging task, but with the right tools and techniques, it is possible to achieve a perfect fit. By following the steps outlined in this article, and using the recommended tools and safety gear, you can cut flagstone safely and accurately. Remember to take breaks as needed to avoid overheating the blade or the angle grinder, and to check the cut periodically to ensure it is straight and even. With a little patience and practice, you can become proficient at cutting flagstone with an angle grinder and create beautiful outdoor features that will enhance the value and beauty of your property.