Austsaw 100mm 4″ Diamond Cutting Blade, Demolition Concrete, Angle Grinder…

Austsaw 100mm 4″ Diamond Cutting Blade, Demolition Concrete, Angle Grinder Disc – Audia100resq

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How To Cut Concrete [Slab, Block, Paver] With Angle Grinder

An angle grinder is a power tool that can be used for cutting through different types of materials, including metal and other solid materials such as bricks, aluminum, stone, and concrete.

This type of hand-held power tool does not have a cutting blade but a grinding wheel. Different types of discs can be used with angle grinders for different applications.

Angle grinders come in different sizes. Typically, they are 10-12 inches in diameter. The power tool can be cordless or have a variety of motor powers for more precise work.

In this article, we will discuss how we can cut different types of concrete elements using the angle grinder and what is the basic process of cutting them.

Precautions Before Cutting Any Type Of Concrete

Make sure you are set up for success before you begin cutting concrete with an angle grinder. Safety must be your top priority. Wear gloves for hand protection and safety glasses for eye protection.

As well, ensure that your angle grinder has a functioning safety guard around the blade. A face mask will also be necessary if you are dry-cutting concrete in order to minimize exposure to silica concrete dust.

Size Of The Grinding Wheel

A 4.5-inch angle grinder can certainly cut through concrete up to 1 inch thick, but you might find the job is done more quickly and with greater precision if you use a 9-inch angle grinder.

The size of the angle grinder is not the only thing to consider. An angle grinder’s motor amps determine its cutting speed. It is typical for a 4.5-inch grinder to have a 7 amp motor, whereas a 7 inch or 9-inch grinder will have a 13 amp motor. Due to nearly proportional amps, the tools operate at about the same speed even though one is larger.

Diamond saw blades are the best tool to use when cutting concrete with an angle grinder. An engineered steel core is surrounded by synthetic diamonds around the edge of these blades. Diamond blades are an obvious choice for cutting concrete with an angle grinder, but your options don’t stop there.

For cutting and grinding metals, metal blades are better. Discs made of metal are less effective on concrete because they cut slower. There are silicon-carbide wheels that can cut through concrete and masonry

Cutting Concrete Slab

It can be more difficult to cut through concrete that contains rebar than concrete alone. The diamond cutting blade is still the best option when cutting concrete slabs or decks that are reinforced with steel rebars. Make sure to use a new diamond blade since steel will wear down the diamonds faster than concrete will.

It is not a job for amateurs to cut concrete with rebar. Concrete reinforced with rebar is extremely strong by design and requires extra force to cut through. Measure where you are cutting and avoid cutting any conduits or utilities within the concrete.

Cutting Concrete Blocks

Concrete blocks without rebar are a bit easier to cut, but planning is still required. Concrete blocks should be marked where they are to be cut and clamped down so that you can make an accurate cut without the block moving.

In any of these concrete cutting applications, you can choose to cut dry or wet. Cutting with water allows for more precise cuts and is easier on the blade. Angle grinders are available with wet blade cutting adapter kits.

Dry cutting is often the better option since it doesn’t create the mess that water does, however you will have to deal with the dust that this method produces. Make sure you are wearing the proper ventilation mask so you don’t breathe in silica dust.

You can use dry-cutting diamond blades with or without water, but wet-cutting diamond blades can only be used in wet applications.

Cutting Concrete Pavers

Concrete pavers will require that you make several cuts through the concrete. After making a few inches of a deep cut, you will chisel or sledgehammer out any loose concrete you wish to remove, then continue to cut into the paver until you have reached the end.

The General Cutting Process

Putting on PPE is the first step Concrete cutting is a messy business that generates a lot of debris, including powdered concrete dust. You must wear the proper protective gear before handling any of this debris, as it can be harmful to you. Mark the concrete As soon as you’re properly prepared for the job, grab some chalk or a similar marking utensil and begin mapping out where you intend to cut on the concrete’s surface. Choosing the right blade After your concrete has been measured and marked, you will move on to the blade selection process, which has been outlined earlier. The Cutting Process Once you’ve selected your blade, you can fire up your angle grinder and begin cutting concrete. You should gently lower the spinning blade onto the concrete’s surface and make an initial divot. After making the cut deeper, you can apply some horizontal force to take the cut forward. While cutting, a steady stream of debris may start to fly your way. During your cut, don’t be afraid to pause to let this subside. Poor visibility, after all, could severely compromise your ability to finish your job safely.

Some Tips And Tricks For Efficient Concrete Cutting

Even some experienced DIYers may find it challenging to cut concrete with an angle grinder for the first time. Consider the following tips to make this process even more efficient in order to lower the learning curve: Score your concrete before cutting it. Only plunge your angle grinder about half as deep as you want, and work across the length of the desired cut. By doing so, you will create a divot that can be followed to efficiently finish the cut. As a result, less debris is ejected at a time. A supplementary grip may be useful. The second point of contact is provided by these handle accessories mounted near an angle grinder’s head. While progressively grinding into the concrete slab’s surface with your angle grinder, this can be particularly helpful. Be careful with hot or dull blades. A dull blade will not be able to make your cuts efficiently and should be replaced. As well, a hot blade is more likely to warp and become damaged, even with normal wear. Cut into concrete surfaces no more often than necessary to avoid that. Having a set of spare blades on hand will allow you to cycle through them while the others cool down.

How to cut Concrete with an Angle Grinder: Cutting Concrete with an Angle Grinder

You’ll find that dealing with concrete is a labor-intensive task that’s very common in most construction projects. Luckily, if you have an angle grinder lying around, you can easily use it to cut through this tough material. Granted, this isn’t the only tool to tackle concrete, but it’s the most practical, beginner-friendly, and cost-effective option for DIYers. For heavy-duty concrete cutting, however, you’ll need a concrete saw. Even though there aren’t many steps to cutting concrete with an angle grinder, there are several aspects to take into account for a safe and efficient operation In this guide, you’ll find everything you need to know about the angle grinder and how to use it to cut concrete!

Can an angle grinder cut concrete?

An angle grinder can indeed be used to cut concrete, among many other things, but only if it’s equipped with the right attachment. Grinding concrete with an angle grinder is another popular use for this tool! Let’s start with the basics for those who are new to this piece of equipment. Angle grinders have round attachments called discs (or wheels, when they’re thicker than ½ inch) that are mounted on a geared head driven by the motor. There are certain types of discs that are specifically designed to cut concrete, and as the motor makes them spin at very high speeds (usually between 8000 and 11000 RPM), they’re worn away until they become small and need to be replaced. Thanks to the speed of the grinder and the strength of the disc, you can easily make sharp-edged cuts in a concrete block and even smooth out concrete surfaces. Read on to learn how to choose the right angle grinder disc to cut concrete.

What attachment do I need to cut concrete with an angle grinder?

It’s important to take the time to understand the advantages (and the disadvantages!) of the different styles and bonds of angle grinder attachments for two reasons. The first is to avoid damaging your workpiece, and the second, to work efficiently. The specific concrete-cutting attachments are called diamond grit blades, and they have a steel core with a sharp edge made of synthetic diamonds. When it comes to disc materials, they’re your best and only option. Metal cutoff discs, for example, won’t be as effective because they’ll cut slower through such a dense material as concrete, so they’re better for grinding and cutting metals. Make sure to get a diamond disc that can be used for both wet and dry cutting of concrete. While you can use a dry-cutting blade with or without water, a wet blade must be used with water When it comes to the shape of the blade’s edge, you do have a couple of options: Segmented rim diamond blades: They have a segmented rim with ventilation gullets (the space between the segments). These separations help to extract cutting dust and debris and cool the blade. They also add a small degree of flexibility to the blade, so it can be used for demanding tasks without cracking. Segmented rim blades are used both for dry and wet cutting, but bear in mind they’ll give a rough cut. Something to consider when buying a segmented rim blade is the abrasiveness of the material you’re cutting. The more abrasive the material is, the wider the gullets should be. Turbo rim diamond blades: They have cooling holes in their metal body, close to the center. These small segments are designed to draw out heat, dust, and debris while the blade is spinning. Turbo rim blades are used for both dry and wet cutting, and since they’re in constant contact with the material, they offer a cleaner and smoother cut. You might come across continuous rim blades as well, but you should stay away from them as they don’t have gullets or holes. They can only be used for wet cutting because it’s the water that cools down the blade and washes away the dust buildup. They’re used for cutting fragile materials that are prone to chipping such as marble, granite, porcelain tile, and ceramic tile. Diamond blades are usually expensive, but their versatility makes them a good investment. An angle grinder equipped with one of these blades can slice everything from stone to granite, cast iron, and brickwork. In simple words, to cut concrete with an angle grinder you’re going to need a diamond grit blade that either has a segmented rim for making rough cuts, or a turbo rim for cleaner cuts.

How to use an angle grinder to cut concrete?

Now that you know how to equip your angle grinder to cut concrete, you can learn the proper procedure and techniques to operate this tool, starting with the safety measures you should take.

Getting ready

All power tools can be dangerous if not handled properly, and angle grinders are no exception. Different grinder models might have different features that require specific safety precautions, so be sure to read the manufacturer’s instructions. To avoid any accidents and the consequent injuries, you should always wear your personal protective equipment (PPE). A complete gear for cutting concrete includes the following items: Safety goggles – to protect your eyes from sparks and debris produced by cutting. Earmuffs – to protect your ears from the loud noise produced by the grinder. A dust mask or face shield – to avoid inhaling any silica or concrete dust produced while cutting. Gloves – for a better grip and to prevent accidental cuts on your hands. Safety boots – to protect your feet from any concrete debris that might fly down. Tightly fitting clothing – to avoid fabric getting caught by the disc.

Preparing your workspace, grinder, and concrete piece

Safety measures don’t only include your person, but also your workspace. Declutter the area, paying special attention to the floor, to prevent any accidents and avoid tripping and falling. As regards preparing your angle grinder, you should always set the disc before you plug the tool into the power source. It’s quite easy to do, just open the spindle, insert the diamond disc of your choice, and then fasten the spindle nut in place. Remember to make sure that both the grinder and the disc are in good condition before using them. Turn on the tool and run it for about 30 seconds to check that everything is secured and works as it should. Finally, you need to prepare the concrete piece you’ll be working on. Mark the place where you want to make the cut using a piece of chalk and trying to keep the edges as straight as possible. If you want to cut small pieces of concrete, blocks, or slabs, they should be clamped down firmly to your workstation to prevent dangerous slips.

Cutting the concrete piece

  • If you have a corded angle grinder, plug it into the power source. Otherwise, skip to the following step.
  • Adjust the blade guard so that it’s positioned between your body and the tool.
  • Turn the angle grinder on and allow the disc to reach full speed before setting it down on the concrete surface to achieve smoother and better results.
  • Holding the tool firmly with both of your hands, set down the disc lightly on the layout you’ve marked at a 90° angle.
  • Score the concrete piece by making an initial divot of about half of your desired depth, then work the grinder horizontally across the length of your outline.
  • Start moving the grinder back and forth along the divot. You might need to apply some pressure, but start lightly and carefully. Don’t force the tool into the concrete, and let it do the job for you instead to avoid kickback.

And that’s it, you’ve successfully cut your concrete piece!


Can any angle grinder be used to cut concrete?

The short answer is no. Since concrete is a very dense material, it’s crucial that your angle grinder has the right size and enough power to handle the job.

You’ll need a grinder that’s between 4-inches and 7-inches and that has a motor of 5-9 amps. Angle grinders can reach up to 15 amps, and for this task, the more power yours has, the better.

Remember that heavy-duty concrete cutting requires a concrete saw. If you try to use your angle grinder for this, there are a few things that can happen.

The most obvious one is that you risk having an accident. Secondly, you’ll wear out your diamond discs faster, and you’ll have to replace them numerous times. This will make the whole process less efficient and more expensive. You might also overload the motor and kill it.

Are there any disadvantages of using an angle grinder to cut concrete?

Yes, using an angle grinder to cut concrete has a few disadvantages, but they’re mainly related to leveling and grinding a concrete floor.

Grinders usually use discs that are between 5-inches and 7-inches, so working on a large concrete surface can take a lot of time. What’s more, working on a floor with an angle grinder requires that you be on your hands and knees, which can be really uncomfortable to do for long periods.

How deep can an angle grinder cut?

When working on concrete, a 4-inch angle grinder can approximately go 1 to 1 ½-inches deep, whereas a 9-inch angle grinder can go about 3 to 3 ½-inches deep. You can use a 4-inch grinder for concrete that’s thicker than 1 ½ inches, but you’ll have to turn the piece over to work on the other side as well and complete the cut. If you want to complete the job faster, you might want to consider using a bigger grinder.


Thank you for reading our post on how to cut concrete with an angle grinder! Angle grinders are extremely versatile tools, and even though they weren’t primarily designed with concrete in mind, they can become a great ally for the handyman who needs to do occasional and small concrete cutting work.

You just have to equip your grinder with a diamond blade, put on your safety gear and follow the instructions we’ve provided!

Hello and welcome to PowerToolGenius! My name is Liam and for the last 9 years, I have worked extensively with various power tools and accessories. I have tested hundreds of different brands and models and understand the industry extensively and have been working with tools my entire life!

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Types of Angle Grinder Discs Their Uses

Let’s check out the different types of angle grinder discs and their uses.

What is an Angle Grinder Disc?

First things first—let’s go over the basics. An angle grinder disc is any disc designed to fit in an angle grinder and rotates at high speed to perform cutting and polishing operations. The angle grinder disc or wheel spins at anywhere from around 2,800 rpm to 12,000 rpm, depending on the brand and model of the tool and the settings you select.

Just by switching different discs in and out of the tool, you can use your angle grinder for a variety of applications. You can cut, grind, polish, carve, and more.

over, you can work on a wide range of materials such as metal, stone, mortar, brick, or wood.

Angle Grinder Disc Types

Now that you know what an angle grinder disc is, let’s check out some of the most common types of discs you can use and what you can do with them.

Large and small versions of these discs are available to suit the size of your angle grinder. For general purposes, consider a larger disc. For detailed work, consider a smaller disc.

Grinding Discs

It makes sense to talk first about grinding discs, also called “grit discs.” These are the discs you need if you want to grind metal or stone. Each disc features an abrasive compound consisting of grains and a bonding agent. You can choose a higher or lower grit depending on how fine or coarse you want the abrasive grains to be.

You may want to start with a low, coarse grit to speed through the beginning of a task, and then switch to a high grit for a smoother finish.

Cut-off Discs

Next, we have cut-off discs, also known as parting wheels. Choose this type of slim, tapered wheel if you want to cut metal stock. You will find variations in thickness for cut-off discs. There are tradeoffs either way. The thinner the disc, the more easily it can slice into metal. But thin abrasive discs are brittle and more prone to breakage. The thicker the disc is, the sturdier it is, and the less likely it is to warp or fracture while you are using it.

So, you will need to weigh those pros and cons when choosing your cut-off discs. In either case, however, try not to push too hard or too fast into the metal. Doing that only makes it more likely you will damage the work and shatter the disc you are using.

Diamond Cutting Discs

If you are working with masonry or stones, a regular grit disc or cut-off disc won’t cut. You will need a diamond cutting disc which is a superior alternative. As the name implies, diamonds grits are embedded into the edges of a steel disc.

As diamond rates a 10 on the Mohs hardness scale, it makes for efficient cutting of concrete, tiles, stones, etc. It also offers superb durability.

So, with a diamond disc, you can work more quickly and easily, even on harder metals. It will cost you more to purchase diamond discs, but they should outlast others, making them more cost-effective in the long run than they may initially appear.

Flap Discs

A flap disc is probably the best option when you need to do some sanding with an angle grinder.

This type of disc uses abrasive (usually Aluminum Oxide) that is similar to a grit disc, but a whole lot finer. The main difference here is that instead of a single flat piece, the flap disc is made of multiple layers of overlapping abrasive sheets called flaps. Sometimes these are referred to as flap wheels, although that name is more appropriate for a radial flap wheel that you use on a drill or rotary tool.

Flap Disc Uses

With a flap disc, you can remove minor imperfections from a surface, remove rust, and polish the surface. Also, if there are fine grinding tasks that you cannot tackle using a regular grit disc, a flap disc may be appropriate. These types of angle grinder discs are often used in autobody shops, metalworking, and fabrication industries. Worried about a flap disc overheating? You can try a ceramic sanding disc as an alternative.

Wire Wheels

One of the most distinctive-looking types of wheels you can get for your angle grinder is a wire wheel. You can use a wire wheel to remove paint or rust from metal.

You also can polish hard metal with a wire wheel—but keep in mind that on softer materials, using a wire wheel is more likely to lead to scratches than a smooth finish. Instead of featuring a cutting or grinding disc, this wheel includes clusters of bristles protruding in a radial formation. These bristles may be slender and straight, or they could be thick and twisted.

The type of wire disc you should get depends on the application you have in mind. The thick, twisted bristles are kind of like coarse grit on a grinder disc. Choose them for tasks that require more speed than precision. Then, switch to straight, fine bristles for work that requires more exactness.


You should always wear safety goggles when you are working with your angle grinder. But it is extra important with a wire wheel, as wires sometimes snap off. That is about the last thing you want flying into your eye. I have seen a lot of novice users ignoring the basic safety practices when with a grinder. I wrote an entire guide on angle grinder safety since this is really important.

Paint Stripping Discs

A wire wheel is not your only option to remove paint. An alternative wheel to consider is a paint stripping disc.

If you are working on a material like wood, fiberglass, or soft metal that you could end up scuffing with a regular wire wheel, a paint stripper may be more suitable.

Instead of wire bristles, a paint stripper wheel features poly-fiber material. It removes paint with efficiency, but should not scratch or scuff the underlying surface. You also can use it to remove epoxy or other residues.

Polishing Pads

You are probably wondering by this point whether there is a type of disc designed with the specific purpose of polishing in mind. Actually, what you are looking for is a polishing pad, which is also called a “buffing pad.”

A variety of different types of polishing pads are on the market. You will need to choose a material that is right for the surface you are working on. For fine surfaces such as polishing your car, get a buffing wheel made of wool.

It is important to take it slow when you are polishing. If you select too high a speed, you will probably end up damaging your surface. Bigger angle grinders are more likely to offer you speeds that are suitable for the job.

austsaw, 100mm, diamond, cutting

Concrete Grinding Wheels

With the right discs, your angle grinder can not only handle metal but can even grind or polish concrete.

There are assorted shapes of concrete grinding wheels and various grit materials. You can find wheels with silicon carbide grain or diamond grit. The diamond cup wheel is the most widely used type since it can be used on a variety of materials and are durable.

Along with hard abrasive materials, these wheels are made of sturdy materials through and through like durable fiberglass. Such materials not only preserve the life of the wheel but also help it push through concrete. Besides grinding concrete with these types of discs, you can also use them to grind granite, stone, marble, masonry, and similar materials.

Although a concrete grinding wheel can offer great longevity, these tough discs eventually wear down. An old disc becomes increasingly likely to chip during use.

Wood Cutting Discs

A couple of times now, we have mentioned grinding or cutting wood using an angle grinder. But as you already know, quite a few types of discs are only suitable for harder materials. If you attempt to use them to cut or carve wood, you might end up damaging your project.

So, is there such a thing as a wood cutting disc? The answer to that question is “yes.”

Woodcutting discs typically feature a toothed, circular blade. You will notice the tips are often tungsten carbide. The reason manufacturers use carbide tips for wood cutting discs is because carbide is incredibly hard. In fact, if you need to sharpen carbide tips, you will require diamond to get the job done.

Because carbide teeth are so hard, they can make clean cuts through both softwood and hardwood. Not only that, but you can get a lot of use out of them before you need to sharpen or replace them.

What types of wood can wood cutting discs handle? You should have no problem slicing a quality disc through pine, cherry, walnut, oak, mahogany, maple, or any other wood you can name.

Wood Carving Discs

If you want to bring carving, shaping, and grinding into your woodworking, you may need to go beyond wood cutting discs to purchase wood carving discs as well.

These discs also usually include carbide teeth. But instead of a flat disc, a wood carving disc has more of a donut shape to it. The teeth are not located around the edges. Instead, they cover the entire surface of the wheel. Typically, they number in the hundreds.

With this shape, this type of disc is especially ideal for creating a concave surface—say, for example, if you are carving out the interior of a wooden bowl.

Keep in mind that working on wood is a bit different from working on metal or concrete. Those materials are typically homogenous. Wood, on the other hand, has natural contours and knots. When working with a wood carving or cutting disc, you must take care not to let your tool catch on irregular features like these. Some wheels are more prone to this than others.

  • What is an Angle Grinder Disc?
  • 10 Angle Grinder Disc Types
  • 1. Grinding Discs
  • 2. Cut-off Discs
  • 3. Diamond Cutting Discs
  • 4. Flap Discs
  • 5. Wire Wheels
  • 6. Paint Stripping Discs
  • 7. Polishing Pads
  • 8. Concrete Grinding Wheels
  • 9. Wood Cutting Discs
  • 10. Wood Carving Discs

What Angle Grinder Blade For Concrete? | Things You Should Know

Ann Hutchinson is the heart of the team, senior editor and our Head of Product Reviews which means she sets the testing parameters of each group review ensuring that tests resemble everyday use.

An angle grinder is a handheld power tool that can be used to perform a series of mechanical tasks like cutting, grinding, and polishing. When equipped with a grinding or diamond blade, the tool cuts concrete efficiently.

Do you think that working with concrete is a messy business? If you aren’t much experienced in DIY projects but would like to learn a thing or two about angle grinders. then this guide is for you.

Angle grinders are versatile tools that can be used to do an array of mechanical tasks. Whether you want to cut a concrete block or polish a tile, an angle grinder can do the job perfectly.

Different Attachments For An Angle Grinder

  • 1. Angle Grinder Discs
  • 2. Cut-Off Wheels
  • 3. Flap Blades
  • 4. Wire Discs
  • 5. Segmented Rim Diamond Blades
  • 6. Polishing Pads
  • 1. Put On Safety Gear
  • 2. Prep Up Your Workspace
  • 3. Fire Up The Angle Grinder
  • 4. Cut The Concrete Slab

Angle grinders are highly versatile and can be equipped with a variety of discs to suit the task at hand. From grinding to cutting and from sanding to polishing, an angle grinder can be used to do any job.

Angle Grinder Discs

Grinding discs are the most common ones and come in different sizes and types. Just like sandpaper, their hardness is measured in terms of grit. A higher grit number indicates less coarse texture, while a disc of a lower grit level is more coarse.

The latter can grind faster, but it produces more sparks while working and gives a rough look to the final product. When our team compared both the types, we noticed that angle grinder cut concrete more efficiently when it was equipped with higher grit disc.

Moving on to its usage, grinding blades can be used to remove excess material from a surface, prep up metal before welding, and clean up cuts. You can use them to sharpen your gardening tools or grind metals before welding.

Cut-Off Wheels

As the name suggests, cut-off wheels are used for slicing metal. They are the most dangerous type of angle grinder blades due to their thin build for delivering accurate cuts. They are the best for doing detailed work, but we suggest being extra careful while working with them. In case you abruptly change the position of the grinder, a cutting blade can easily shatter, and the small flying parts can cause serious injuries.

over, you can use cut-off discs for cutting metal tubes, bars, and sheets. They are also good for altering the length of bolts and cutting welds. Just ensure that you are properly geared up while using them.

Flap Blades

Moving on, a flap disc is quite similar to a grinding wheel but is primarily used for finishing. It has a smooth texture and can be used to polish ceramic tile, metal, concrete materials, and several other solid materials. Just like grinding blades, flap discs also come in different grit levels. The higher the grit, the smoother the blade will be.

If you are looking for an angle grinder attachment to remove scratches and burrs from your project, then a flap disc is a competent choice. It can also be used to smoothen the edges and polish gouged-up metal.

Wire Discs

Wire discs are brush instruments made with wire bristles typically used for cleaning paint and rust. Depending on their texture, wire discs are of two types – crimped and knotted. The former has wavy or twisted filaments and is used for light polishing, while the latter, with metal wire loops, is better suited for heavy brushing.

These attachments are ideal for scraping rust and corrosion, removing waste from metal and concrete surfaces, washing, surface painting, mixing welds, polishing, and deburring. Furthermore, if you want to remove resin from a concrete block, then this one is your best bet.

Segmented Rim Diamond Blades

Diamond blades are hands down the sharpest angle grinder attachments. They are called so because the wheels have segmented rims and synthetic diamonds at the edge. The sharpness and durability of the blade increase with its number of segments.

Owing to their diamond rims, the blades can be used to cut hard-to-penetrate and tough materials like granite, porcelain tile, concrete pavers, etc. It is used for dry and wet blade operations alike and is efficient for both types of cutting.

Polishing Pads

Lastly, polishing pads are made of smooth material and are used for gently polishing a surface. You can find a lot of options on the market and choose one based on the desired smoothness level. For instance, if you want to polish a dent in your car, then a buffing wheel made of wool is the perfect option, as you don’t want to scratch it.

However, if you want to polish concrete blocks, then you can choose a more coarse polishing pad. Another thing worth noting while using these attachments is the speed. As a rule of thumb, maintain an optimum speed while using polishing pads, as going faster can damage the surface while going slower won’t make much of a difference to the finished product.

Are Angle Grinder Blades Universal?

Angle grinder blades are generally universal and can be used with any model. However, some grinders might come with unique orientations and connecting ports, so it is best to check your exact model before buying a blade.

What Angle Grinder Blade Cuts Metal?

Metal is a tough material, and it takes enormous strength for tools to cut through it. Therefore, it is essential to select the right angle grinder blade for cutting metal. If you pick the wrong one, the blade can shatter during the process and injure you. While a sharp and thin blade is more prone to slipping, a blunt one can leave the job unfinished.

To strike the right balance, we suggest working with cut-off or diamond blades. Both these attachments are sharp, cut deeper, and make clean cuts. This eliminates scratches and burrs, giving a smooth and finished edge to the metal pieces.

How To Use Angle Grinder Blade To Cut Concrete?

We told you how to equip your angle grinder according to the task, be it cutting metal or concrete. Now let’s discuss how to use your handy tool to perform that task, as in, how to cut concrete. Concrete cutting process can be daunting, but here are a few simple steps you can try:

Put On Safety Gear

Handling an angle grinder blade is no easy task, and even some experienced DIYers are prone to hurting themselves while using it. So, as a rule of thumb, wear proper personal protective equipment to keep yourself safe from accidents and injuries. A complete protective kit for cutting concrete comprises the following gear:

  • Safety glasses to keep your eyes safe from debris and sparks
  • Earmuffs to stay clear of the noise
  • A dust shield or face mask so that you don’t inhale any powdered concrete dust or silica
  • Gloves for holding the handle better and preventing slips and accidental cuts
  • Boots to stay safe from debris
  • Tightly-fitted clothes so that fabric doesn’t get caught by the angle grinder disc
austsaw, 100mm, diamond, cutting

Prep Up Your Workspace

Once you have put on the safety gear, you need to prepare your workspace. We suggest using the angle grinder in an open and clear area where there are not many people, especially kids. Try and avoid using it in your garage because it is usually cramped up with discarded stuff. Declutter your workspace, taking special care that the floor isn’t littered so that you don’t trip and fall.

Equip your angle grinder beforehand and set its disc by opening the spindle and inserting the preferred diamond blade. After equipping the blade, move on to the concrete slab you will be cutting.

Make markings using chalk and ruler to ensure perfect cuts. If the block you want to cut is small, then we emphasize clamping it down to your workstation. That’s because you will be more prone to slips due to the smaller working surface, not to forget that tiny pieces fly more easily while cutting.

Fire Up The Angle Grinder

When everything is ready, plug in your angle grinder to a power source and adjust the blade guard such that it is positioned between the tool and your body. Now turn it on, and once the disc reaches its maximum speed, let it run for at least half a minute.

Cut The Concrete Slab

Move the grinder toward a concrete slab at an angle of 90° and make a cut of nearly half the depth of the slab. After making the initial divot, keep cutting until you reach your desired depth by moving the grinder to and fro.

Start carefully with a light hand, cut slower, and eventually work your way through the concrete. You can apply more pressure as the cut gets deeper. Just make sure that you don’t force the blade into the slab. After a minute or so, you will gain momentum and will be able to cut the slab effortlessly.

Angle Grinder Blade For Concrete Conclusion

An angle grinder is the only tool that can be used for a plethora of tasks, such as grinding, polishing, cutting, deburring, etc. It is a handy device that comes with different types of attachments and handle accessories to be better suited for carrying out different projects.

However, if you are looking for an attachment that is the best for cutting concrete, then we recommend using diamond blades. That’s because these are the sharpest and cut the concrete’s surface efficiently.

That said, we have reached the end of this informative guide. Thanks for reading, and do try using an angle grinder for cutting concrete. We’ll see you next time!

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