To make it easy you have to follow some steps, procedures and use the right tools like the proper blade type, the power of the circular saw…etc. Operating circular saws aren’t difficult enough. There are two methods that can be used when using a circular saw to cut concrete blocks. Set the saw blade so it will cut about 1/4 inch to 1/2 inch deep. A concrete block is a rectangular block used in construction. Regular concrete blocks are usually measured in inches or millimeters. Each method comes with a type of diamond blade that suits it. Concrete is a mix of sand, gravel, cement and water, and it is everywhere. The wet cutting blades are on the top, but you must add a low stream of water during the cut, this will lubricate the blade during the cutting process and also it will prevent the silica dust from being produced. This will not allow you to cut well. When you have completed the steps above, place the diamond blade on the marked point of the concrete block. All you have to do is mark out the curve on the block and follow the curved line. Contrary to the dry blades, wet blades always must have water added to it during the cutting process. While you can find vacuum systems designed to collect the dust material, the systems aren't fully effective. Measure the area where you’ll install the cut cinder block. It also depends on the type of concrete that you want to cut whether it is a hollow core block or reinforced concrete blocks. If you are cutting because you need both sides of the concrete block, then hitting it will not be your best bet. Back the saw out after about 30 seconds to avoid overheating. To cut concrete with a 15-amp circular saw, start by using chalk to mark cut lines on the surface of the slab. Use both hands to hold and support the saw firmly in place while cutting, Mark out the line you want to cut through with chalk or sharp rod, Ensure the diamond blade is properly fixed in the saw before you begin cutting, Take breaks. To fix in the diamond blade, slide the blade cover backward. Cutting cleanly through concrete blocks is not a task that can be executed with just any saw or power tool. You need a diamond cutting blade with your circular saw to accurately cut clean through the block without damaging it. For cutting masonry blocks with a circular saw, the most important thing is using an appropriately sized diamond blade. With the variety of the circular saw models and being versatile enough, these saws offer you with the corded and cordless functions and features. He now enjoys researching DIY tools and writing guides about it. Secondly, slide the blade cover and make sure the blade is locked firm. For example: A masonry abrasive cutting blade is inexpensive, so they are affordable but the bad side is that the cutting speed is not good, you will take a longer time to cut your concrete block as well as they wear so quickly, and you have to replace it from time to time if you have a lot of jobs to do with it. Only buy the wet cutting blades if you have a specific concrete saw or a circular saw with special parts to add water stream to the cut during the process. A circular saw with a masonry blade can also be used to either score or completely cut through the block. The steps above will also work well if you need to cut curves in the concrete block. The wet/dry cutting blades are actually diamond blades but the problem is that cutting concrete makes the blade extremely hot, and here comes these blades. If you want to cut some concrete blocks, cut a wall or slab or whatever you want, then you need to do it the right way. Squeeze the trigger gently until the blade begins to move. I had a sidewalk that was raised above a driveway and I knocked about a 45 degree angle into the corner of the side walk block to match the driveway. Your safety is vital when using any tool. Before we get started, you should follow these tips: Make sure the surface that you want to cut is clean. So, let’s get to it. These types of reinforced blocks are used in the construction of dams and used in building foundations. Another method for cutting concrete pavers is to use a hand-held power saw such as a Skillsaw with a masonry blade or a cut-off saw. You can’t remove a blade if it is spinning around as you try to unscrew it. Methods of Using a Circular Saw to Cut Concrete Blocks. When you are done with the steps above, you should be proud of the cutting result.  for cutting retaining wall blocks. You need to plan your cut before practically engaging in it. Each material has an indicated type of blade which you can find in the hardware store or online. The concrete block varies in size and thickness. Don’t bring your face close to the surface area while sawing if you are using the dry cutting method. The type of circular saw doesn’t have a significant effect, but I prefer using the DEWALT DWC860W because it has a built-in water feeding system that will help you reduce the dust and prevent the overheating, and I’ve already tried it with the DEWALT DW4701 blade for cutting retaining wall blocks. If you are using a battery-operated saw, remove the battery and switch off the saw. Luckily, this article will highlight the easy steps, tips, and tools needed to effectively cut through concrete blocks in seconds. Step 5 Lower the end of the blade to the cut-line, keeping the shoe of the saw against the cinder block. If your cut doesn’t need to be exact, use a cold chisel and hand sledge to cut the concrete. If you are making use of a smooth diamond blade, remember to use a saw that can apply water on the surface, or gently pour water as you are cutting. Cutting concrete blocks is a daunting task because of the materials that were put together to make the block. You'd have a very hard time keeping a miter cut flat. The following is a list of the most common concrete-cutting chores – ranging from small to enormous – and the best techniques and tools for handling these tasks. Firstly, make sure your saw is unplugged. This step is a deciding factor on the type of cutting result you will get after sawing. If you are cutting the concrete block because you want to trim the block to the required size, you can hit the part you don’t need slightly so it will give way. Small rough cuts can be made using a sledgehammer and cold chisel. You will need to move the saw blade back … How to cut concrete blocks with circular saw? There you go! Step 3: Start the cutting slowly and don’t force the blade or the circular saw, just let the machine do the cutting by itself and you do the feeding slowly. This video shows you exactly what it looks like to use wet cutting blades: If you are doing a quick job, then aim for the masonry abrasive blade. The teeth of the blade should be facing in the direction that you will be cutting. The marks act as the guidelines on wear the circular saw blade will pass. It can cut materials such as masonry, metal, plastic, and wood, and can be either mounted to a machine or hand-held. Put on your safety gear; Remove the old blade Attach the diamond blade; Mark out the line you want to cut; Power-up your circular saw; Place the blade of the saw on the concrete block; Start cutting Tip 2: Cut Concrete with the Right Diamond BladeFor maximum cutting speed and blade life, you should match the blade as closely as possible to the material you're cutting. Type of circular saw is used for cutting concrete? When attached with the correct blade, the saw is capable of cutting just about any material from steel to concrete. However, if you need to cut concrete blocks constantly, it would be convenient for you to buy or rent a concrete saw. He used to own a local shop where he sold different tools for 20+ years. Tape the saw to prevent scratches. How to Cut Concrete Blocks with Circular Saw. Modern circular saws have a “blade release switch” that allows you to remove the blade. Take a tape measure and measure the length of the space where the cut cinder block will fit. Here, we are dealing with the strongest material on earth, the diamond. You may want to cut some blocks for your yard, cut a wall or slab or whatever you want, but if you are trying to cut it, you have to do it in the right way because it’s actually a hard job to do, and instead of hiring a contractor to do the job and it may cost you a lot of money, you can do it all by yourself if you have the right tools. With the diamond blade placed on the point marked out, pull the trigger of the circular saw to start cutting. Inspect every part of the saw before and during the task. Have a superb cutting experience. Cutting concrete blocks can be done a few different ways. The rest of the blockwork can be quite quiet other than the block cutting. Actually, the most important thing about cutting concrete is the blade, as we learned before in this guide that the blade is what really makes the cut, not the saw, meaning that if you have the best concrete saw in the world but have the wrong blade, you won’t cut anything and you will end up breaking the blade. Place the block down on a surface that will prevent it from vibrating and thus, moving. Why Should You Use Circular Saw To cut Concrete Blocks? Why Should You Use Circular Saw To cut Concrete Blocks? An angle grinder's design enables it to cut small square holes in a concrete block; a useful trait when installing electrical outlets in a concrete block wall. Push the blade of the saw to and from while cutting to ensure the blade cuts evenly. © PowerSawExpert.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Try using a concrete saw. Score the length of the cut three or four times with the chisel. The goggles protect your eyes from flying debris like little stones and dust while the mask prevents you from inhaling dust particles. You will enjoy reading them. Reinforced concrete is a structural element in your building, so be careful when dealing with it, because cutting the rebar inside the RC may cause cracks in other parts of the RC. If you want to buy any other type, just make sure that the RPM is above 3000 just to increase the cutting speed. An angle grinder equipped with a concrete-cutting blade makes straight sharp-edged cuts in a concrete block's surface. However, a circular saw that has a special blade is the best choice. It would be great if you could buy precut blocks also. Though your eyes are protected, the debris can still hit any part of your face. An abrasive corundum masonry blade or a diamond blade are needed to cut concrete with a circular saw effectively and safely. The scarifier doesn't really slice the way you think a traditional blade on a circular saw does. When the dust becomes airborne, it's possible to inhale it into your lungs, which can create severe health problems. With the wet method, water is constantly needed to be applied to the concrete you are cutting. This isn’t as hard as it sounds. Mark your cutting line onto the concrete using a 2-by-4 as a straightedge to guide the chalk. Fixing the serrated diamond blade is a tad different from regular blades. Before you move on to the cutting procedure, drip the concrete block into the water so that dust will reduce and also make the cutting easy. Step 4: If you are cutting with wet blade, then make sure you have someone helping you add a slow stream of water to the blade during the process to overcome the heating and prevent the dust. The common concrete blocks are “4-inch, 8-inch, and 12-inch” blocks. Step 1: Mark off the cutting path with the chalk line. With regular circular saw blades, you fix the blade in the saw with the teeth angled upwards. Make sure you have the right blade and that the blade is not dull to avoid kickback. With the diamond blade, the teeth are usually angled downwards like the shape of a comma (the punctuation mark). the dry cutting blades are specially designed so they expel the heat quickly by making segmented teeth on the blade. It’s advised to take a break from cutting for a few seconds, especially if you are working on a large block like the 12-inch concrete block. Remove the screw and the washer. These dust particles can affect the blade you are using and also the result you will get when you complete the task. Press down on your saw’s arbor-lock to open and place the blade. Turn on the circular saw's motor, and lower the saw's blade gradually onto one edge of the chalk or pencil line on the paver's upward-facing side. How to cut concrete blocks with a circular saw? Step 4 Cut around the entire block with the saw, then adjust it so it will cut 1/4 inch to 1/2 inch deeper into the block. Step 5: Do not make a continues cut, stop the blade every 45 seconds and do it again. It has a blade that can usually cut 1/4" or so deep up to several feet wide of concrete per pass. You can change the blade if you need … Also, check out other articles and posts on this website. 7. The easiest would be with a circular saw and a masonry cutting blade. Best Spray Guns For Plasti Dip – Give Your Car A New Look! If you’re using a wet saw and the chalk is washing off, use a crayon so the line will stay. Diamond rim masonry blades can cut concrete block when used on a circular saw. Rather than setting your saw at a miter, leave it at 90 degrees and cut from the side of the blocks. Attach the blade and the washer, and then tighten the screws. Therefore, I advise you to wear a respirator or dust mask. If yours doesn’t have the switch, use a wrench to loosen the bolt holding the blade in place. After choosing the proper blade, install the blade on the saw. Michael is the Editor at thetoolgeeks.com. There are several types of blades; each has its own use. If more than a handful, diamond may be the way to go. If you are a contractor and doing many concrete cutting jobs, aim for the diamond blades. Best Corded Circular Saws: Which One Should You Pick? So to protect yourself from cuts, use a pair of really thick gloves. Tools Needed: If you want to cut in reinforced concrete, do not do it by yourself because of two reasons: You will encounter rebar and things may not be good with you, you will need a professional. If you want to buy any other type, just make sure that the RPM is above 3000 just to increase the cutting speed. With all the basic and innovative techniques, this was all about the Circular Saws and how to cut concrete blocks with Circular Saw. The circular saw however is one tool that can cleanly cut through concrete easily, leaving you with desired and accurate results. Concrete blocks are usually made with gravel and cement which make them hard. However, certain building needs require different sizes and make of blocks. Methods of Using a Circular Saw to Cut Concrete Blocks; How to cut concrete blocks with a circular saw? If the blade can saw through concrete, think of what it could do to your fingers. To install the blade, first, check that your saw is turned off and unplugged. The circular saw has to be hands down one of the most aggressive power cutting tools ever made. Simply use your circular saw and diamond blade to cut completely through the block. How To Use Reciprocating Saws To Cut Trees? A circular saw would be a power tool that uses an abrasive or a toothed disc to cut various materials by utilizing the motion spinning around its arbor. If you’re using cinder blocks to build a wall or patio space, cutting cinder blocks to a precise size will ensure they fit perfectly. The water eliminates the problem of dust particles and also cools the blade while working. Cut in several steps, say 3/4 to 1" at a time. Tips to get the best cutting results when using a circular saw to cut through concrete, Safety measures to follow when using a circular saw to cut concrete blocks. Set the saw blade to cut ½-inch deep, and position the paver on a flat surface, such as the ground or a sturdy board set on top a couple of sawhorses. To be able to cut concrete with circular saw, the thickness must not exceed 15 cm max or things may become difficult. Before we get started, you should follow these tips: Wear all your protective gear. If you have a blade in the circular saw, you need to remove it, so you can attach the diamond blade. Marking out the area is like marking out the route the blade will follow. Diamond blades are more expensive; they do not wear easily and stay for a longer time, and if you are a contractor who always deals with concrete cutting jobs, diamond blades will be the prefect tool for you. Mark the cut and clamp the stone or paver to a stable work surface. Depending on the thickness of the concrete, you may have to raise the blade and cut through only a portion of the paver. Hold the saw firmly in place with both hands and turn on the saw. 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