Choosing the right diamond blade for an angle grinder starts with knowing what you need to cut.
Angle grinders are useful for smaller cutting jobs because they are compact, easy to handle and widely used on construction sites. However, the blade needs to match both the material and the machine.
Whether you are cutting concrete, brick, block, natural stone or another hard material, using the correct diamond blade can make the job easier and help the blade perform properly.
If you already know what you need, browse our diamond blades or continue reading to find the right type.
An angle grinder fitted with the correct diamond blade can be used for a range of construction materials.
The important thing is to choose a blade designed for the material you are cutting.
Common applications include:
Different materials place different demands on a blade, so one diamond blade is not necessarily suitable for everything.
The best blade depends primarily on what you are cutting.
Reinforced concrete contains steel reinforcement, which makes cutting more demanding.
If your angle grinder needs to cut reinforced concrete, choose a blade specifically designed for the application.
Our Pathfinder is designed for concrete and reinforced concrete and is intended for demanding trade use.
For more information, see How to Cut Reinforced Concrete
Diamond blades can be used for cutting brick and block, but the right blade depends on the material.
General construction brick and block can often be cut with a suitable general-purpose construction blade.
Dense engineering brick is more demanding and may require a blade designed for harder materials.
Read our guide to Cutting Engineering Brick Properly
Stone can vary considerably in hardness and composition.
Choose a blade designed for the type of stone you are cutting rather than assuming that a general-purpose concrete blade will give the best result.
Porcelain and ceramic tiles require a different approach from ordinary construction materials.
For these applications, use a diamond blade specifically designed for tile and porcelain cutting.
A suitable continuous-rim or specialist tile blade can provide a cleaner cut than a general-purpose segmented construction blade.
Diamond blades are manufactured with different cutting edges and constructions for different applications.
Segmented blades have gaps between the diamond segments.
They are commonly used for construction materials such as:
They are particularly useful where cutting performance and material removal are more important than achieving an ultra-clean edge.
Turbo blades have a closely spaced or continuous cutting edge with a textured or serrated appearance.
They can provide a combination of cutting speed and a relatively clean finish.
Continuous-rim blades have a continuous cutting edge.
They are commonly used where a cleaner, more controlled cut is required, particularly with materials such as porcelain and ceramic tiles.
The important point is that blade design should match the material and the type of cut you need to make.
Angle grinders are available in different sizes, so the blade diameter must match the machine.
Common angle grinder blade sizes include:
Not every grinder accepts every blade size.
Before buying a diamond blade, check:
Never fit a blade that is not suitable for the machine.
Yes. An angle grinder can be useful for smaller concrete cutting jobs and shallower cuts when fitted with a suitable diamond blade.
However, an angle grinder has limitations.
For deeper or longer cuts, a larger machine such as a petrol disc cutter may be more appropriate.
The right choice depends on the required cutting depth, the material and the equipment available.
For a comparison of machines, see our guide to Angle Grinder vs Petrol Saw for Concrete Cutting
Many diamond blades designed for angle grinders are suitable for dry cutting.
Dry cutting is convenient because it does not require a water supply. However, cutting concrete and masonry can produce a significant amount of dust.
Always follow the instructions supplied with the blade and machine.
Use appropriate PPE and take suitable measures to control dust.
A diamond blade works best when it is matched to the material and used correctly.
Before cutting:
If a blade is cutting poorly, don’t automatically assume that the blade is worn out. The wrong blade type, incorrect cutting technique or unsuitable material can all affect performance.
We supply diamond blades for a range of construction and cutting applications.
Depending on the material and job, our range includes blades for:
Browse our diamond blades to see the available options.
If you’re not sure which blade you need, we’re happy to help.
If you know what you’re cutting but aren’t sure which blade is suitable, tell us:
We’ll help you narrow down the options.
If you’d rather speak to someone, call Chris on 07879 653725
The right diamond blade can make a big difference.
Don’t choose a blade simply because it is the cheapest option. Match the blade to the material, machine and job.
Right blade. Right machine. Better cutting.
The best blade depends on the material being cut. A blade suitable for concrete may not be the best choice for porcelain, stone or particularly hard materials.
Yes, provided the blade is designed for use with the angle grinder and the diameter, bore and maximum RPM are compatible with the machine.
The blade size must match the specification of the grinder. Common sizes include 115mm, 125mm and 230mm, but always check the machine manufacturer’s instructions before fitting a blade.
Yes. An angle grinder can be suitable for smaller and shallower concrete cutting jobs when fitted with an appropriate diamond blade.
Some general-purpose construction blades can cut both concrete and brick. However, harder or more demanding materials may require a specialist blade.
Several things can affect cutting performance, including using the wrong blade for the material, incorrect cutting technique or a blade that has become glazed.
See our guide to Why Is My Diamond Blade Not Cutting?
